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torvalds
GitHub Repository: torvalds/linux
Path: blob/master/drivers/clk/actions/owl-s900.c
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// SPDX-License-Identifier: GPL-2.0+
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//
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// OWL S900 SoC clock driver
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//
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// Copyright (c) 2014 Actions Semi Inc.
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// Author: David Liu <[email protected]>
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//
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// Copyright (c) 2018 Linaro Ltd.
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// Author: Manivannan Sadhasivam <[email protected]>
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#include <linux/clk-provider.h>
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#include <linux/platform_device.h>
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#include "owl-common.h"
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#include "owl-composite.h"
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#include "owl-divider.h"
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#include "owl-factor.h"
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#include "owl-fixed-factor.h"
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#include "owl-gate.h"
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#include "owl-mux.h"
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#include "owl-pll.h"
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#include "owl-reset.h"
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#include <dt-bindings/clock/actions,s900-cmu.h>
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#include <dt-bindings/reset/actions,s900-reset.h>
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#define CMU_COREPLL (0x0000)
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#define CMU_DEVPLL (0x0004)
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#define CMU_DDRPLL (0x0008)
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#define CMU_NANDPLL (0x000C)
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#define CMU_DISPLAYPLL (0x0010)
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#define CMU_AUDIOPLL (0x0014)
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#define CMU_TVOUTPLL (0x0018)
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#define CMU_BUSCLK (0x001C)
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#define CMU_SENSORCLK (0x0020)
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#define CMU_LCDCLK (0x0024)
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#define CMU_DSICLK (0x0028)
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#define CMU_CSICLK (0x002C)
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#define CMU_DECLK (0x0030)
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#define CMU_BISPCLK (0x0034)
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#define CMU_IMXCLK (0x0038)
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#define CMU_HDECLK (0x003C)
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#define CMU_VDECLK (0x0040)
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#define CMU_VCECLK (0x0044)
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#define CMU_NANDCCLK (0x004C)
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#define CMU_SD0CLK (0x0050)
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#define CMU_SD1CLK (0x0054)
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#define CMU_SD2CLK (0x0058)
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#define CMU_UART0CLK (0x005C)
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#define CMU_UART1CLK (0x0060)
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#define CMU_UART2CLK (0x0064)
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#define CMU_PWM0CLK (0x0070)
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#define CMU_PWM1CLK (0x0074)
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#define CMU_PWM2CLK (0x0078)
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#define CMU_PWM3CLK (0x007C)
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#define CMU_USBPLL (0x0080)
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#define CMU_ASSISTPLL (0x0084)
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#define CMU_EDPCLK (0x0088)
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#define CMU_GPU3DCLK (0x0090)
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#define CMU_CORECTL (0x009C)
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#define CMU_DEVCLKEN0 (0x00A0)
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#define CMU_DEVCLKEN1 (0x00A4)
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#define CMU_DEVRST0 (0x00A8)
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#define CMU_DEVRST1 (0x00AC)
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#define CMU_UART3CLK (0x00B0)
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#define CMU_UART4CLK (0x00B4)
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#define CMU_UART5CLK (0x00B8)
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#define CMU_UART6CLK (0x00BC)
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#define CMU_TLSCLK (0x00C0)
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#define CMU_SD3CLK (0x00C4)
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#define CMU_PWM4CLK (0x00C8)
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#define CMU_PWM5CLK (0x00CC)
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static struct clk_pll_table clk_audio_pll_table[] = {
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{ 0, 45158400 }, { 1, 49152000 },
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{ /* sentinel */ }
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};
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static struct clk_pll_table clk_edp_pll_table[] = {
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{ 0, 810000000 }, { 1, 135000000 }, { 2, 270000000 },
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{ /* sentinel */ }
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};
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/* pll clocks */
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static OWL_PLL_NO_PARENT(core_pll_clk, "core_pll_clk", CMU_COREPLL, 24000000, 9, 0, 8, 5, 107, NULL, CLK_IGNORE_UNUSED);
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static OWL_PLL_NO_PARENT(dev_pll_clk, "dev_pll_clk", CMU_DEVPLL, 6000000, 8, 0, 8, 20, 180, NULL, CLK_IGNORE_UNUSED);
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static OWL_PLL_NO_PARENT(ddr_pll_clk, "ddr_pll_clk", CMU_DDRPLL, 24000000, 8, 0, 8, 5, 45, NULL, CLK_IGNORE_UNUSED);
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static OWL_PLL_NO_PARENT(nand_pll_clk, "nand_pll_clk", CMU_NANDPLL, 6000000, 8, 0, 8, 4, 100, NULL, CLK_IGNORE_UNUSED);
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static OWL_PLL_NO_PARENT(display_pll_clk, "display_pll_clk", CMU_DISPLAYPLL, 6000000, 8, 0, 8, 20, 180, NULL, CLK_IGNORE_UNUSED);
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static OWL_PLL_NO_PARENT(assist_pll_clk, "assist_pll_clk", CMU_ASSISTPLL, 500000000, 0, 0, 0, 0, 0, NULL, CLK_IGNORE_UNUSED);
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static OWL_PLL_NO_PARENT(audio_pll_clk, "audio_pll_clk", CMU_AUDIOPLL, 0, 4, 0, 1, 0, 0, clk_audio_pll_table, CLK_IGNORE_UNUSED);
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static OWL_PLL(edp_pll_clk, "edp_pll_clk", "edp24M_clk", CMU_EDPCLK, 0, 9, 0, 2, 0, 0, clk_edp_pll_table, CLK_IGNORE_UNUSED);
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static const char *cpu_clk_mux_p[] = { "losc", "hosc", "core_pll_clk", };
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static const char *dev_clk_p[] = { "hosc", "dev_pll_clk", };
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static const char *noc_clk_mux_p[] = { "dev_clk", "assist_pll_clk", };
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static const char *dmm_clk_mux_p[] = { "dev_clk", "nand_pll_clk", "assist_pll_clk", "ddr_clk_src", };
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static const char *bisp_clk_mux_p[] = { "assist_pll_clk", "dev_clk", };
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static const char *csi_clk_mux_p[] = { "display_pll_clk", "dev_clk", };
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static const char *de_clk_mux_p[] = { "assist_pll_clk", "dev_clk", };
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static const char *gpu_clk_mux_p[] = { "dev_clk", "display_pll_clk", "ddr_clk_src", };
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static const char *hde_clk_mux_p[] = { "dev_clk", "display_pll_clk", "ddr_clk_src", };
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static const char *imx_clk_mux_p[] = { "assist_pll_clk", "dev_clk", };
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static const char *lcd_clk_mux_p[] = { "display_pll_clk", "nand_pll_clk", };
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static const char *nand_clk_mux_p[] = { "dev_clk", "nand_pll_clk", };
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static const char *sd_clk_mux_p[] = { "dev_clk", "nand_pll_clk", };
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static const char *sensor_clk_mux_p[] = { "hosc", "bisp_clk", };
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static const char *uart_clk_mux_p[] = { "hosc", "dev_pll_clk", };
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static const char *vce_clk_mux_p[] = { "dev_clk", "display_pll_clk", "assist_pll_clk", "ddr_clk_src", };
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static const char *i2s_clk_mux_p[] = { "audio_pll_clk", };
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static const char *edp_clk_mux_p[] = { "assist_pll_clk", "display_pll_clk", };
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/* mux clocks */
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static OWL_MUX(cpu_clk, "cpu_clk", cpu_clk_mux_p, CMU_BUSCLK, 0, 2, CLK_SET_RATE_PARENT);
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static OWL_MUX(dev_clk, "dev_clk", dev_clk_p, CMU_DEVPLL, 12, 1, CLK_SET_RATE_PARENT);
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static OWL_MUX(noc_clk_mux, "noc_clk_mux", noc_clk_mux_p, CMU_BUSCLK, 7, 1, CLK_SET_RATE_PARENT);
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static struct clk_div_table nand_div_table[] = {
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{ 0, 1 }, { 1, 2 }, { 2, 4 }, { 3, 6 },
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{ 4, 8 }, { 5, 10 }, { 6, 12 }, { 7, 14 },
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{ 8, 16 }, { 9, 18 }, { 10, 20 }, { 11, 22 },
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{ 12, 24 }, { 13, 26 }, { 14, 28 }, { 15, 30 },
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{ /* sentinel */ }
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};
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static struct clk_div_table apb_div_table[] = {
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{ 1, 2 }, { 2, 3 }, { 3, 4 },
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{ /* sentinel */ }
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};
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static struct clk_div_table eth_mac_div_table[] = {
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{ 0, 2 }, { 1, 4 },
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{ /* sentinel */ }
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};
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static struct clk_div_table rmii_ref_div_table[] = {
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{ 0, 4 }, { 1, 10 },
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{ /* sentinel */ }
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};
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static struct clk_div_table usb3_mac_div_table[] = {
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{ 1, 2 }, { 2, 3 }, { 3, 4 },
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{ /* sentinel */ }
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};
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static struct clk_div_table i2s_div_table[] = {
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{ 0, 1 }, { 1, 2 }, { 2, 3 }, { 3, 4 },
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{ 4, 6 }, { 5, 8 }, { 6, 12 }, { 7, 16 },
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{ 8, 24 },
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{ /* sentinel */ }
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};
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static struct clk_div_table hdmia_div_table[] = {
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{ 0, 1 }, { 1, 2 }, { 2, 3 }, { 3, 4 },
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{ 4, 6 }, { 5, 8 }, { 6, 12 }, { 7, 16 },
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{ 8, 24 },
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{ /* sentinel */ }
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};
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/* divider clocks */
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static OWL_DIVIDER(noc_clk_div, "noc_clk_div", "noc_clk", CMU_BUSCLK, 19, 1, NULL, 0, 0);
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static OWL_DIVIDER(ahb_clk, "ahb_clk", "noc_clk_div", CMU_BUSCLK, 4, 1, NULL, 0, 0);
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static OWL_DIVIDER(apb_clk, "apb_clk", "ahb_clk", CMU_BUSCLK, 8, 2, apb_div_table, 0, 0);
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static OWL_DIVIDER(usb3_mac_clk, "usb3_mac_clk", "assist_pll_clk", CMU_ASSISTPLL, 12, 2, usb3_mac_div_table, 0, 0);
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static OWL_DIVIDER(rmii_ref_clk, "rmii_ref_clk", "assist_pll_clk", CMU_ASSISTPLL, 8, 1, rmii_ref_div_table, 0, 0);
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static struct clk_factor_table sd_factor_table[] = {
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/* bit0 ~ 4 */
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{ 0, 1, 1 }, { 1, 1, 2 }, { 2, 1, 3 }, { 3, 1, 4 },
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{ 4, 1, 5 }, { 5, 1, 6 }, { 6, 1, 7 }, { 7, 1, 8 },
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{ 8, 1, 9 }, { 9, 1, 10 }, { 10, 1, 11 }, { 11, 1, 12 },
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{ 12, 1, 13 }, { 13, 1, 14 }, { 14, 1, 15 }, { 15, 1, 16 },
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{ 16, 1, 17 }, { 17, 1, 18 }, { 18, 1, 19 }, { 19, 1, 20 },
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{ 20, 1, 21 }, { 21, 1, 22 }, { 22, 1, 23 }, { 23, 1, 24 },
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{ 24, 1, 25 }, { 25, 1, 26 }, { 26, 1, 27 }, { 27, 1, 28 },
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{ 28, 1, 29 }, { 29, 1, 30 }, { 30, 1, 31 }, { 31, 1, 32 },
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/* bit8: /128 */
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{ 256, 1, 1 * 128 }, { 257, 1, 2 * 128 }, { 258, 1, 3 * 128 }, { 259, 1, 4 * 128 },
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{ 260, 1, 5 * 128 }, { 261, 1, 6 * 128 }, { 262, 1, 7 * 128 }, { 263, 1, 8 * 128 },
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{ 264, 1, 9 * 128 }, { 265, 1, 10 * 128 }, { 266, 1, 11 * 128 }, { 267, 1, 12 * 128 },
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{ 268, 1, 13 * 128 }, { 269, 1, 14 * 128 }, { 270, 1, 15 * 128 }, { 271, 1, 16 * 128 },
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{ 272, 1, 17 * 128 }, { 273, 1, 18 * 128 }, { 274, 1, 19 * 128 }, { 275, 1, 20 * 128 },
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{ 276, 1, 21 * 128 }, { 277, 1, 22 * 128 }, { 278, 1, 23 * 128 }, { 279, 1, 24 * 128 },
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{ 280, 1, 25 * 128 }, { 281, 1, 26 * 128 }, { 282, 1, 27 * 128 }, { 283, 1, 28 * 128 },
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{ 284, 1, 29 * 128 }, { 285, 1, 30 * 128 }, { 286, 1, 31 * 128 }, { 287, 1, 32 * 128 },
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{ /* sentinel */ }
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};
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static struct clk_factor_table dmm_factor_table[] = {
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{ 0, 1, 1 }, { 1, 2, 3 }, { 2, 1, 2 }, { 3, 1, 3 },
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{ 4, 1, 4 },
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{ /* sentinel */ }
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};
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static struct clk_factor_table noc_factor_table[] = {
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{ 0, 1, 1 }, { 1, 2, 3 }, { 2, 1, 2 }, { 3, 1, 3 }, { 4, 1, 4 },
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{ /* sentinel */ }
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};
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static struct clk_factor_table bisp_factor_table[] = {
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{ 0, 1, 1 }, { 1, 2, 3 }, { 2, 1, 2 }, { 3, 2, 5 },
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{ 4, 1, 3 }, { 5, 1, 4 }, { 6, 1, 6 }, { 7, 1, 8 },
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{ /* sentinel */ }
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};
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/* factor clocks */
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static OWL_FACTOR(noc_clk, "noc_clk", "noc_clk_mux", CMU_BUSCLK, 16, 3, noc_factor_table, 0, 0);
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static OWL_FACTOR(de_clk1, "de_clk1", "de_clk", CMU_DECLK, 0, 3, bisp_factor_table, 0, 0);
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static OWL_FACTOR(de_clk2, "de_clk2", "de_clk", CMU_DECLK, 4, 3, bisp_factor_table, 0, 0);
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static OWL_FACTOR(de_clk3, "de_clk3", "de_clk", CMU_DECLK, 8, 3, bisp_factor_table, 0, 0);
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/* gate clocks */
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static OWL_GATE(gpio_clk, "gpio_clk", "apb_clk", CMU_DEVCLKEN0, 18, 0, 0);
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static OWL_GATE_NO_PARENT(gpu_clk, "gpu_clk", CMU_DEVCLKEN0, 30, 0, 0);
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static OWL_GATE(dmac_clk, "dmac_clk", "noc_clk_div", CMU_DEVCLKEN0, 1, 0, 0);
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static OWL_GATE(timer_clk, "timer_clk", "hosc", CMU_DEVCLKEN1, 27, 0, 0);
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static OWL_GATE_NO_PARENT(dsi_clk, "dsi_clk", CMU_DEVCLKEN0, 12, 0, 0);
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static OWL_GATE(ddr0_clk, "ddr0_clk", "ddr_pll_clk", CMU_DEVCLKEN0, 31, 0, CLK_IGNORE_UNUSED);
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static OWL_GATE(ddr1_clk, "ddr1_clk", "ddr_pll_clk", CMU_DEVCLKEN0, 29, 0, CLK_IGNORE_UNUSED);
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static OWL_GATE_NO_PARENT(usb3_480mpll0_clk, "usb3_480mpll0_clk", CMU_USBPLL, 3, 0, 0);
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static OWL_GATE_NO_PARENT(usb3_480mphy0_clk, "usb3_480mphy0_clk", CMU_USBPLL, 2, 0, 0);
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static OWL_GATE_NO_PARENT(usb3_5gphy_clk, "usb3_5gphy_clk", CMU_USBPLL, 1, 0, 0);
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static OWL_GATE_NO_PARENT(usb3_cce_clk, "usb3_cce_clk", CMU_USBPLL, 0, 0, 0);
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static OWL_GATE(edp24M_clk, "edp24M_clk", "diff24M", CMU_EDPCLK, 8, 0, 0);
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static OWL_GATE(edp_link_clk, "edp_link_clk", "edp_pll_clk", CMU_DEVCLKEN0, 10, 0, 0);
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static OWL_GATE_NO_PARENT(usbh0_pllen_clk, "usbh0_pllen_clk", CMU_USBPLL, 12, 0, 0);
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static OWL_GATE_NO_PARENT(usbh0_phy_clk, "usbh0_phy_clk", CMU_USBPLL, 10, 0, 0);
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static OWL_GATE_NO_PARENT(usbh0_cce_clk, "usbh0_cce_clk", CMU_USBPLL, 8, 0, 0);
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static OWL_GATE_NO_PARENT(usbh1_pllen_clk, "usbh1_pllen_clk", CMU_USBPLL, 13, 0, 0);
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static OWL_GATE_NO_PARENT(usbh1_phy_clk, "usbh1_phy_clk", CMU_USBPLL, 11, 0, 0);
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static OWL_GATE_NO_PARENT(usbh1_cce_clk, "usbh1_cce_clk", CMU_USBPLL, 9, 0, 0);
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static OWL_GATE(spi0_clk, "spi0_clk", "ahb_clk", CMU_DEVCLKEN1, 10, 0, CLK_IGNORE_UNUSED);
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static OWL_GATE(spi1_clk, "spi1_clk", "ahb_clk", CMU_DEVCLKEN1, 11, 0, CLK_IGNORE_UNUSED);
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static OWL_GATE(spi2_clk, "spi2_clk", "ahb_clk", CMU_DEVCLKEN1, 12, 0, CLK_IGNORE_UNUSED);
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static OWL_GATE(spi3_clk, "spi3_clk", "ahb_clk", CMU_DEVCLKEN1, 13, 0, CLK_IGNORE_UNUSED);
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/* composite clocks */
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static OWL_COMP_FACTOR(bisp_clk, "bisp_clk", bisp_clk_mux_p,
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OWL_MUX_HW(CMU_BISPCLK, 4, 1),
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OWL_GATE_HW(CMU_DEVCLKEN0, 14, 0),
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OWL_FACTOR_HW(CMU_BISPCLK, 0, 3, 0, bisp_factor_table),
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0);
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static OWL_COMP_DIV(csi0_clk, "csi0_clk", csi_clk_mux_p,
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OWL_MUX_HW(CMU_CSICLK, 4, 1),
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OWL_GATE_HW(CMU_DEVCLKEN0, 13, 0),
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OWL_DIVIDER_HW(CMU_CSICLK, 0, 4, 0, NULL),
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0);
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static OWL_COMP_DIV(csi1_clk, "csi1_clk", csi_clk_mux_p,
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OWL_MUX_HW(CMU_CSICLK, 20, 1),
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OWL_GATE_HW(CMU_DEVCLKEN0, 15, 0),
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OWL_DIVIDER_HW(CMU_CSICLK, 16, 4, 0, NULL),
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0);
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static OWL_COMP_PASS(de_clk, "de_clk", de_clk_mux_p,
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OWL_MUX_HW(CMU_DECLK, 12, 1),
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OWL_GATE_HW(CMU_DEVCLKEN0, 8, 0),
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0);
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static OWL_COMP_FACTOR(dmm_clk, "dmm_clk", dmm_clk_mux_p,
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OWL_MUX_HW(CMU_BUSCLK, 10, 2),
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OWL_GATE_HW(CMU_DEVCLKEN0, 19, 0),
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OWL_FACTOR_HW(CMU_BUSCLK, 12, 3, 0, dmm_factor_table),
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CLK_IGNORE_UNUSED);
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static OWL_COMP_FACTOR(edp_clk, "edp_clk", edp_clk_mux_p,
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OWL_MUX_HW(CMU_EDPCLK, 19, 1),
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OWL_GATE_HW(CMU_DEVCLKEN0, 10, 0),
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OWL_FACTOR_HW(CMU_EDPCLK, 16, 3, 0, bisp_factor_table),
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0);
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static OWL_COMP_DIV_FIXED(eth_mac_clk, "eth_mac_clk", "assist_pll_clk",
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OWL_GATE_HW(CMU_DEVCLKEN1, 22, 0),
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OWL_DIVIDER_HW(CMU_ASSISTPLL, 10, 1, 0, eth_mac_div_table),
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0);
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static OWL_COMP_FACTOR(gpu_core_clk, "gpu_core_clk", gpu_clk_mux_p,
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OWL_MUX_HW(CMU_GPU3DCLK, 4, 2),
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OWL_GATE_HW(CMU_GPU3DCLK, 15, 0),
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OWL_FACTOR_HW(CMU_GPU3DCLK, 0, 3, 0, bisp_factor_table),
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0);
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static OWL_COMP_FACTOR(gpu_mem_clk, "gpu_mem_clk", gpu_clk_mux_p,
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OWL_MUX_HW(CMU_GPU3DCLK, 20, 2),
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OWL_GATE_HW(CMU_GPU3DCLK, 14, 0),
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OWL_FACTOR_HW(CMU_GPU3DCLK, 16, 3, 0, bisp_factor_table),
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0);
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static OWL_COMP_FACTOR(gpu_sys_clk, "gpu_sys_clk", gpu_clk_mux_p,
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OWL_MUX_HW(CMU_GPU3DCLK, 28, 2),
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OWL_GATE_HW(CMU_GPU3DCLK, 13, 0),
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OWL_FACTOR_HW(CMU_GPU3DCLK, 24, 3, 0, bisp_factor_table),
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0);
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static OWL_COMP_FACTOR(hde_clk, "hde_clk", hde_clk_mux_p,
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OWL_MUX_HW(CMU_HDECLK, 4, 2),
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OWL_GATE_HW(CMU_DEVCLKEN0, 27, 0),
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OWL_FACTOR_HW(CMU_HDECLK, 0, 3, 0, bisp_factor_table),
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0);
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static OWL_COMP_DIV(hdmia_clk, "hdmia_clk", i2s_clk_mux_p,
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OWL_MUX_HW(CMU_AUDIOPLL, 24, 1),
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OWL_GATE_HW(CMU_DEVCLKEN0, 22, 0),
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OWL_DIVIDER_HW(CMU_AUDIOPLL, 24, 4, 0, hdmia_div_table),
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0);
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static OWL_COMP_FIXED_FACTOR(i2c0_clk, "i2c0_clk", "assist_pll_clk",
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OWL_GATE_HW(CMU_DEVCLKEN1, 14, 0),
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1, 5, 0);
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static OWL_COMP_FIXED_FACTOR(i2c1_clk, "i2c1_clk", "assist_pll_clk",
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OWL_GATE_HW(CMU_DEVCLKEN1, 15, 0),
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1, 5, 0);
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static OWL_COMP_FIXED_FACTOR(i2c2_clk, "i2c2_clk", "assist_pll_clk",
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OWL_GATE_HW(CMU_DEVCLKEN1, 30, 0),
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1, 5, 0);
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static OWL_COMP_FIXED_FACTOR(i2c3_clk, "i2c3_clk", "assist_pll_clk",
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OWL_GATE_HW(CMU_DEVCLKEN1, 31, 0),
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1, 5, 0);
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static OWL_COMP_FIXED_FACTOR(i2c4_clk, "i2c4_clk", "assist_pll_clk",
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OWL_GATE_HW(CMU_DEVCLKEN0, 17, 0),
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1, 5, 0);
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static OWL_COMP_FIXED_FACTOR(i2c5_clk, "i2c5_clk", "assist_pll_clk",
331
OWL_GATE_HW(CMU_DEVCLKEN1, 1, 0),
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1, 5, 0);
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static OWL_COMP_DIV(i2srx_clk, "i2srx_clk", i2s_clk_mux_p,
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OWL_MUX_HW(CMU_AUDIOPLL, 24, 1),
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OWL_GATE_HW(CMU_DEVCLKEN0, 21, 0),
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OWL_DIVIDER_HW(CMU_AUDIOPLL, 20, 4, 0, i2s_div_table),
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0);
339
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static OWL_COMP_DIV(i2stx_clk, "i2stx_clk", i2s_clk_mux_p,
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OWL_MUX_HW(CMU_AUDIOPLL, 24, 1),
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OWL_GATE_HW(CMU_DEVCLKEN0, 20, 0),
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OWL_DIVIDER_HW(CMU_AUDIOPLL, 16, 4, 0, i2s_div_table),
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0);
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static OWL_COMP_FACTOR(imx_clk, "imx_clk", imx_clk_mux_p,
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OWL_MUX_HW(CMU_IMXCLK, 4, 1),
348
OWL_GATE_HW(CMU_DEVCLKEN1, 17, 0),
349
OWL_FACTOR_HW(CMU_IMXCLK, 0, 3, 0, bisp_factor_table),
350
0);
351
352
static OWL_COMP_DIV(lcd_clk, "lcd_clk", lcd_clk_mux_p,
353
OWL_MUX_HW(CMU_LCDCLK, 12, 2),
354
OWL_GATE_HW(CMU_DEVCLKEN0, 9, 0),
355
OWL_DIVIDER_HW(CMU_LCDCLK, 0, 5, 0, NULL),
356
0);
357
358
static OWL_COMP_DIV(nand0_clk, "nand0_clk", nand_clk_mux_p,
359
OWL_MUX_HW(CMU_NANDCCLK, 8, 1),
360
OWL_GATE_HW(CMU_DEVCLKEN0, 4, 0),
361
OWL_DIVIDER_HW(CMU_NANDCCLK, 0, 4, 0, nand_div_table),
362
CLK_SET_RATE_PARENT);
363
364
static OWL_COMP_DIV(nand1_clk, "nand1_clk", nand_clk_mux_p,
365
OWL_MUX_HW(CMU_NANDCCLK, 24, 1),
366
OWL_GATE_HW(CMU_DEVCLKEN0, 11, 0),
367
OWL_DIVIDER_HW(CMU_NANDCCLK, 16, 4, 0, nand_div_table),
368
CLK_SET_RATE_PARENT);
369
370
static OWL_COMP_DIV_FIXED(pwm0_clk, "pwm0_clk", "hosc",
371
OWL_GATE_HW(CMU_DEVCLKEN1, 23, 0),
372
OWL_DIVIDER_HW(CMU_PWM0CLK, 0, 6, 0, NULL),
373
0);
374
375
static OWL_COMP_DIV_FIXED(pwm1_clk, "pwm1_clk", "hosc",
376
OWL_GATE_HW(CMU_DEVCLKEN1, 24, 0),
377
OWL_DIVIDER_HW(CMU_PWM1CLK, 0, 6, 0, NULL),
378
0);
379
/*
380
* pwm2 may be for backlight, do not gate it
381
* even it is "unused", because it may be
382
* enabled at boot stage, and in kernel, driver
383
* has no effective method to know the real status,
384
* so, the best way is keeping it as what it was.
385
*/
386
static OWL_COMP_DIV_FIXED(pwm2_clk, "pwm2_clk", "hosc",
387
OWL_GATE_HW(CMU_DEVCLKEN1, 25, 0),
388
OWL_DIVIDER_HW(CMU_PWM2CLK, 0, 6, 0, NULL),
389
CLK_IGNORE_UNUSED);
390
391
static OWL_COMP_DIV_FIXED(pwm3_clk, "pwm3_clk", "hosc",
392
OWL_GATE_HW(CMU_DEVCLKEN1, 26, 0),
393
OWL_DIVIDER_HW(CMU_PWM3CLK, 0, 6, 0, NULL),
394
0);
395
396
static OWL_COMP_DIV_FIXED(pwm4_clk, "pwm4_clk", "hosc",
397
OWL_GATE_HW(CMU_DEVCLKEN1, 4, 0),
398
OWL_DIVIDER_HW(CMU_PWM4CLK, 0, 6, 0, NULL),
399
0);
400
401
static OWL_COMP_DIV_FIXED(pwm5_clk, "pwm5_clk", "hosc",
402
OWL_GATE_HW(CMU_DEVCLKEN1, 5, 0),
403
OWL_DIVIDER_HW(CMU_PWM5CLK, 0, 6, 0, NULL),
404
0);
405
406
static OWL_COMP_FACTOR(sd0_clk, "sd0_clk", sd_clk_mux_p,
407
OWL_MUX_HW(CMU_SD0CLK, 9, 1),
408
OWL_GATE_HW(CMU_DEVCLKEN0, 5, 0),
409
OWL_FACTOR_HW(CMU_SD0CLK, 0, 9, 0, sd_factor_table),
410
0);
411
412
static OWL_COMP_FACTOR(sd1_clk, "sd1_clk", sd_clk_mux_p,
413
OWL_MUX_HW(CMU_SD1CLK, 9, 1),
414
OWL_GATE_HW(CMU_DEVCLKEN0, 6, 0),
415
OWL_FACTOR_HW(CMU_SD1CLK, 0, 9, 0, sd_factor_table),
416
0);
417
418
static OWL_COMP_FACTOR(sd2_clk, "sd2_clk", sd_clk_mux_p,
419
OWL_MUX_HW(CMU_SD2CLK, 9, 1),
420
OWL_GATE_HW(CMU_DEVCLKEN0, 7, 0),
421
OWL_FACTOR_HW(CMU_SD2CLK, 0, 9, 0, sd_factor_table),
422
0);
423
424
static OWL_COMP_FACTOR(sd3_clk, "sd3_clk", sd_clk_mux_p,
425
OWL_MUX_HW(CMU_SD3CLK, 9, 1),
426
OWL_GATE_HW(CMU_DEVCLKEN0, 16, 0),
427
OWL_FACTOR_HW(CMU_SD3CLK, 0, 9, 0, sd_factor_table),
428
0);
429
430
static OWL_COMP_DIV(sensor_clk, "sensor_clk", sensor_clk_mux_p,
431
OWL_MUX_HW(CMU_SENSORCLK, 4, 1),
432
OWL_GATE_HW(CMU_DEVCLKEN0, 14, 0),
433
OWL_DIVIDER_HW(CMU_SENSORCLK, 0, 4, 0, NULL),
434
0);
435
436
static OWL_COMP_DIV_FIXED(speed_sensor_clk, "speed_sensor_clk",
437
"hosc",
438
OWL_GATE_HW(CMU_DEVCLKEN1, 0, 0),
439
OWL_DIVIDER_HW(CMU_TLSCLK, 0, 4, CLK_DIVIDER_POWER_OF_TWO, NULL),
440
0);
441
442
static OWL_COMP_DIV_FIXED(thermal_sensor_clk, "thermal_sensor_clk",
443
"hosc",
444
OWL_GATE_HW(CMU_DEVCLKEN1, 2, 0),
445
OWL_DIVIDER_HW(CMU_TLSCLK, 8, 4, CLK_DIVIDER_POWER_OF_TWO, NULL),
446
0);
447
448
static OWL_COMP_DIV(uart0_clk, "uart0_clk", uart_clk_mux_p,
449
OWL_MUX_HW(CMU_UART0CLK, 16, 1),
450
OWL_GATE_HW(CMU_DEVCLKEN1, 6, 0),
451
OWL_DIVIDER_HW(CMU_UART0CLK, 0, 8, CLK_DIVIDER_ROUND_CLOSEST, NULL),
452
CLK_IGNORE_UNUSED);
453
454
static OWL_COMP_DIV(uart1_clk, "uart1_clk", uart_clk_mux_p,
455
OWL_MUX_HW(CMU_UART1CLK, 16, 1),
456
OWL_GATE_HW(CMU_DEVCLKEN1, 7, 0),
457
OWL_DIVIDER_HW(CMU_UART1CLK, 1, 8, CLK_DIVIDER_ROUND_CLOSEST, NULL),
458
CLK_IGNORE_UNUSED);
459
460
static OWL_COMP_DIV(uart2_clk, "uart2_clk", uart_clk_mux_p,
461
OWL_MUX_HW(CMU_UART2CLK, 16, 1),
462
OWL_GATE_HW(CMU_DEVCLKEN1, 8, 0),
463
OWL_DIVIDER_HW(CMU_UART2CLK, 0, 8, CLK_DIVIDER_ROUND_CLOSEST, NULL),
464
CLK_IGNORE_UNUSED);
465
466
static OWL_COMP_DIV(uart3_clk, "uart3_clk", uart_clk_mux_p,
467
OWL_MUX_HW(CMU_UART3CLK, 16, 1),
468
OWL_GATE_HW(CMU_DEVCLKEN1, 19, 0),
469
OWL_DIVIDER_HW(CMU_UART3CLK, 0, 8, CLK_DIVIDER_ROUND_CLOSEST, NULL),
470
CLK_IGNORE_UNUSED);
471
472
static OWL_COMP_DIV(uart4_clk, "uart4_clk", uart_clk_mux_p,
473
OWL_MUX_HW(CMU_UART4CLK, 16, 1),
474
OWL_GATE_HW(CMU_DEVCLKEN1, 20, 0),
475
OWL_DIVIDER_HW(CMU_UART4CLK, 0, 8, CLK_DIVIDER_ROUND_CLOSEST, NULL),
476
CLK_IGNORE_UNUSED);
477
478
static OWL_COMP_DIV(uart5_clk, "uart5_clk", uart_clk_mux_p,
479
OWL_MUX_HW(CMU_UART5CLK, 16, 1),
480
OWL_GATE_HW(CMU_DEVCLKEN1, 21, 0),
481
OWL_DIVIDER_HW(CMU_UART5CLK, 0, 8, CLK_DIVIDER_ROUND_CLOSEST, NULL),
482
CLK_IGNORE_UNUSED);
483
484
static OWL_COMP_DIV(uart6_clk, "uart6_clk", uart_clk_mux_p,
485
OWL_MUX_HW(CMU_UART6CLK, 16, 1),
486
OWL_GATE_HW(CMU_DEVCLKEN1, 18, 0),
487
OWL_DIVIDER_HW(CMU_UART6CLK, 0, 8, CLK_DIVIDER_ROUND_CLOSEST, NULL),
488
CLK_IGNORE_UNUSED);
489
490
static OWL_COMP_FACTOR(vce_clk, "vce_clk", vce_clk_mux_p,
491
OWL_MUX_HW(CMU_VCECLK, 4, 2),
492
OWL_GATE_HW(CMU_DEVCLKEN0, 26, 0),
493
OWL_FACTOR_HW(CMU_VCECLK, 0, 3, 0, bisp_factor_table),
494
0);
495
496
static OWL_COMP_FACTOR(vde_clk, "vde_clk", hde_clk_mux_p,
497
OWL_MUX_HW(CMU_VDECLK, 4, 2),
498
OWL_GATE_HW(CMU_DEVCLKEN0, 25, 0),
499
OWL_FACTOR_HW(CMU_VDECLK, 0, 3, 0, bisp_factor_table),
500
0);
501
502
static struct owl_clk_common *s900_clks[] = {
503
&core_pll_clk.common,
504
&dev_pll_clk.common,
505
&ddr_pll_clk.common,
506
&nand_pll_clk.common,
507
&display_pll_clk.common,
508
&assist_pll_clk.common,
509
&audio_pll_clk.common,
510
&edp_pll_clk.common,
511
&cpu_clk.common,
512
&dev_clk.common,
513
&noc_clk_mux.common,
514
&noc_clk_div.common,
515
&ahb_clk.common,
516
&apb_clk.common,
517
&usb3_mac_clk.common,
518
&rmii_ref_clk.common,
519
&noc_clk.common,
520
&de_clk1.common,
521
&de_clk2.common,
522
&de_clk3.common,
523
&gpio_clk.common,
524
&gpu_clk.common,
525
&dmac_clk.common,
526
&timer_clk.common,
527
&dsi_clk.common,
528
&ddr0_clk.common,
529
&ddr1_clk.common,
530
&usb3_480mpll0_clk.common,
531
&usb3_480mphy0_clk.common,
532
&usb3_5gphy_clk.common,
533
&usb3_cce_clk.common,
534
&edp24M_clk.common,
535
&edp_link_clk.common,
536
&usbh0_pllen_clk.common,
537
&usbh0_phy_clk.common,
538
&usbh0_cce_clk.common,
539
&usbh1_pllen_clk.common,
540
&usbh1_phy_clk.common,
541
&usbh1_cce_clk.common,
542
&i2c0_clk.common,
543
&i2c1_clk.common,
544
&i2c2_clk.common,
545
&i2c3_clk.common,
546
&i2c4_clk.common,
547
&i2c5_clk.common,
548
&spi0_clk.common,
549
&spi1_clk.common,
550
&spi2_clk.common,
551
&spi3_clk.common,
552
&bisp_clk.common,
553
&csi0_clk.common,
554
&csi1_clk.common,
555
&de_clk.common,
556
&dmm_clk.common,
557
&edp_clk.common,
558
&eth_mac_clk.common,
559
&gpu_core_clk.common,
560
&gpu_mem_clk.common,
561
&gpu_sys_clk.common,
562
&hde_clk.common,
563
&hdmia_clk.common,
564
&i2srx_clk.common,
565
&i2stx_clk.common,
566
&imx_clk.common,
567
&lcd_clk.common,
568
&nand0_clk.common,
569
&nand1_clk.common,
570
&pwm0_clk.common,
571
&pwm1_clk.common,
572
&pwm2_clk.common,
573
&pwm3_clk.common,
574
&pwm4_clk.common,
575
&pwm5_clk.common,
576
&sd0_clk.common,
577
&sd1_clk.common,
578
&sd2_clk.common,
579
&sd3_clk.common,
580
&sensor_clk.common,
581
&speed_sensor_clk.common,
582
&thermal_sensor_clk.common,
583
&uart0_clk.common,
584
&uart1_clk.common,
585
&uart2_clk.common,
586
&uart3_clk.common,
587
&uart4_clk.common,
588
&uart5_clk.common,
589
&uart6_clk.common,
590
&vce_clk.common,
591
&vde_clk.common,
592
};
593
594
static struct clk_hw_onecell_data s900_hw_clks = {
595
.hws = {
596
[CLK_CORE_PLL] = &core_pll_clk.common.hw,
597
[CLK_DEV_PLL] = &dev_pll_clk.common.hw,
598
[CLK_DDR_PLL] = &ddr_pll_clk.common.hw,
599
[CLK_NAND_PLL] = &nand_pll_clk.common.hw,
600
[CLK_DISPLAY_PLL] = &display_pll_clk.common.hw,
601
[CLK_ASSIST_PLL] = &assist_pll_clk.common.hw,
602
[CLK_AUDIO_PLL] = &audio_pll_clk.common.hw,
603
[CLK_EDP_PLL] = &edp_pll_clk.common.hw,
604
[CLK_CPU] = &cpu_clk.common.hw,
605
[CLK_DEV] = &dev_clk.common.hw,
606
[CLK_NOC_MUX] = &noc_clk_mux.common.hw,
607
[CLK_NOC_DIV] = &noc_clk_div.common.hw,
608
[CLK_AHB] = &ahb_clk.common.hw,
609
[CLK_APB] = &apb_clk.common.hw,
610
[CLK_USB3_MAC] = &usb3_mac_clk.common.hw,
611
[CLK_RMII_REF] = &rmii_ref_clk.common.hw,
612
[CLK_NOC] = &noc_clk.common.hw,
613
[CLK_DE1] = &de_clk1.common.hw,
614
[CLK_DE2] = &de_clk2.common.hw,
615
[CLK_DE3] = &de_clk3.common.hw,
616
[CLK_GPIO] = &gpio_clk.common.hw,
617
[CLK_GPU] = &gpu_clk.common.hw,
618
[CLK_DMAC] = &dmac_clk.common.hw,
619
[CLK_TIMER] = &timer_clk.common.hw,
620
[CLK_DSI] = &dsi_clk.common.hw,
621
[CLK_DDR0] = &ddr0_clk.common.hw,
622
[CLK_DDR1] = &ddr1_clk.common.hw,
623
[CLK_USB3_480MPLL0] = &usb3_480mpll0_clk.common.hw,
624
[CLK_USB3_480MPHY0] = &usb3_480mphy0_clk.common.hw,
625
[CLK_USB3_5GPHY] = &usb3_5gphy_clk.common.hw,
626
[CLK_USB3_CCE] = &usb3_cce_clk.common.hw,
627
[CLK_24M_EDP] = &edp24M_clk.common.hw,
628
[CLK_EDP_LINK] = &edp_link_clk.common.hw,
629
[CLK_USB2H0_PLLEN] = &usbh0_pllen_clk.common.hw,
630
[CLK_USB2H0_PHY] = &usbh0_phy_clk.common.hw,
631
[CLK_USB2H0_CCE] = &usbh0_cce_clk.common.hw,
632
[CLK_USB2H1_PLLEN] = &usbh1_pllen_clk.common.hw,
633
[CLK_USB2H1_PHY] = &usbh1_phy_clk.common.hw,
634
[CLK_USB2H1_CCE] = &usbh1_cce_clk.common.hw,
635
[CLK_I2C0] = &i2c0_clk.common.hw,
636
[CLK_I2C1] = &i2c1_clk.common.hw,
637
[CLK_I2C2] = &i2c2_clk.common.hw,
638
[CLK_I2C3] = &i2c3_clk.common.hw,
639
[CLK_I2C4] = &i2c4_clk.common.hw,
640
[CLK_I2C5] = &i2c5_clk.common.hw,
641
[CLK_SPI0] = &spi0_clk.common.hw,
642
[CLK_SPI1] = &spi1_clk.common.hw,
643
[CLK_SPI2] = &spi2_clk.common.hw,
644
[CLK_SPI3] = &spi3_clk.common.hw,
645
[CLK_BISP] = &bisp_clk.common.hw,
646
[CLK_CSI0] = &csi0_clk.common.hw,
647
[CLK_CSI1] = &csi1_clk.common.hw,
648
[CLK_DE0] = &de_clk.common.hw,
649
[CLK_DMM] = &dmm_clk.common.hw,
650
[CLK_EDP] = &edp_clk.common.hw,
651
[CLK_ETH_MAC] = &eth_mac_clk.common.hw,
652
[CLK_GPU_CORE] = &gpu_core_clk.common.hw,
653
[CLK_GPU_MEM] = &gpu_mem_clk.common.hw,
654
[CLK_GPU_SYS] = &gpu_sys_clk.common.hw,
655
[CLK_HDE] = &hde_clk.common.hw,
656
[CLK_HDMI_AUDIO] = &hdmia_clk.common.hw,
657
[CLK_I2SRX] = &i2srx_clk.common.hw,
658
[CLK_I2STX] = &i2stx_clk.common.hw,
659
[CLK_IMX] = &imx_clk.common.hw,
660
[CLK_LCD] = &lcd_clk.common.hw,
661
[CLK_NAND0] = &nand0_clk.common.hw,
662
[CLK_NAND1] = &nand1_clk.common.hw,
663
[CLK_PWM0] = &pwm0_clk.common.hw,
664
[CLK_PWM1] = &pwm1_clk.common.hw,
665
[CLK_PWM2] = &pwm2_clk.common.hw,
666
[CLK_PWM3] = &pwm3_clk.common.hw,
667
[CLK_PWM4] = &pwm4_clk.common.hw,
668
[CLK_PWM5] = &pwm5_clk.common.hw,
669
[CLK_SD0] = &sd0_clk.common.hw,
670
[CLK_SD1] = &sd1_clk.common.hw,
671
[CLK_SD2] = &sd2_clk.common.hw,
672
[CLK_SD3] = &sd3_clk.common.hw,
673
[CLK_SENSOR] = &sensor_clk.common.hw,
674
[CLK_SPEED_SENSOR] = &speed_sensor_clk.common.hw,
675
[CLK_THERMAL_SENSOR] = &thermal_sensor_clk.common.hw,
676
[CLK_UART0] = &uart0_clk.common.hw,
677
[CLK_UART1] = &uart1_clk.common.hw,
678
[CLK_UART2] = &uart2_clk.common.hw,
679
[CLK_UART3] = &uart3_clk.common.hw,
680
[CLK_UART4] = &uart4_clk.common.hw,
681
[CLK_UART5] = &uart5_clk.common.hw,
682
[CLK_UART6] = &uart6_clk.common.hw,
683
[CLK_VCE] = &vce_clk.common.hw,
684
[CLK_VDE] = &vde_clk.common.hw,
685
},
686
.num = CLK_NR_CLKS,
687
};
688
689
static const struct owl_reset_map s900_resets[] = {
690
[RESET_DMAC] = { CMU_DEVRST0, BIT(0) },
691
[RESET_SRAMI] = { CMU_DEVRST0, BIT(1) },
692
[RESET_DDR_CTL_PHY] = { CMU_DEVRST0, BIT(2) },
693
[RESET_NANDC0] = { CMU_DEVRST0, BIT(3) },
694
[RESET_SD0] = { CMU_DEVRST0, BIT(4) },
695
[RESET_SD1] = { CMU_DEVRST0, BIT(5) },
696
[RESET_PCM1] = { CMU_DEVRST0, BIT(6) },
697
[RESET_DE] = { CMU_DEVRST0, BIT(7) },
698
[RESET_LVDS] = { CMU_DEVRST0, BIT(8) },
699
[RESET_SD2] = { CMU_DEVRST0, BIT(9) },
700
[RESET_DSI] = { CMU_DEVRST0, BIT(10) },
701
[RESET_CSI0] = { CMU_DEVRST0, BIT(11) },
702
[RESET_BISP_AXI] = { CMU_DEVRST0, BIT(12) },
703
[RESET_CSI1] = { CMU_DEVRST0, BIT(13) },
704
[RESET_GPIO] = { CMU_DEVRST0, BIT(15) },
705
[RESET_EDP] = { CMU_DEVRST0, BIT(16) },
706
[RESET_AUDIO] = { CMU_DEVRST0, BIT(17) },
707
[RESET_PCM0] = { CMU_DEVRST0, BIT(18) },
708
[RESET_HDE] = { CMU_DEVRST0, BIT(21) },
709
[RESET_GPU3D_PA] = { CMU_DEVRST0, BIT(22) },
710
[RESET_IMX] = { CMU_DEVRST0, BIT(23) },
711
[RESET_SE] = { CMU_DEVRST0, BIT(24) },
712
[RESET_NANDC1] = { CMU_DEVRST0, BIT(25) },
713
[RESET_SD3] = { CMU_DEVRST0, BIT(26) },
714
[RESET_GIC] = { CMU_DEVRST0, BIT(27) },
715
[RESET_GPU3D_PB] = { CMU_DEVRST0, BIT(28) },
716
[RESET_DDR_CTL_PHY_AXI] = { CMU_DEVRST0, BIT(29) },
717
[RESET_CMU_DDR] = { CMU_DEVRST0, BIT(30) },
718
[RESET_DMM] = { CMU_DEVRST0, BIT(31) },
719
[RESET_USB2HUB] = { CMU_DEVRST1, BIT(0) },
720
[RESET_USB2HSIC] = { CMU_DEVRST1, BIT(1) },
721
[RESET_HDMI] = { CMU_DEVRST1, BIT(2) },
722
[RESET_HDCP2TX] = { CMU_DEVRST1, BIT(3) },
723
[RESET_UART6] = { CMU_DEVRST1, BIT(4) },
724
[RESET_UART0] = { CMU_DEVRST1, BIT(5) },
725
[RESET_UART1] = { CMU_DEVRST1, BIT(6) },
726
[RESET_UART2] = { CMU_DEVRST1, BIT(7) },
727
[RESET_SPI0] = { CMU_DEVRST1, BIT(8) },
728
[RESET_SPI1] = { CMU_DEVRST1, BIT(9) },
729
[RESET_SPI2] = { CMU_DEVRST1, BIT(10) },
730
[RESET_SPI3] = { CMU_DEVRST1, BIT(11) },
731
[RESET_I2C0] = { CMU_DEVRST1, BIT(12) },
732
[RESET_I2C1] = { CMU_DEVRST1, BIT(13) },
733
[RESET_USB3] = { CMU_DEVRST1, BIT(14) },
734
[RESET_UART3] = { CMU_DEVRST1, BIT(15) },
735
[RESET_UART4] = { CMU_DEVRST1, BIT(16) },
736
[RESET_UART5] = { CMU_DEVRST1, BIT(17) },
737
[RESET_I2C2] = { CMU_DEVRST1, BIT(18) },
738
[RESET_I2C3] = { CMU_DEVRST1, BIT(19) },
739
[RESET_ETHERNET] = { CMU_DEVRST1, BIT(20) },
740
[RESET_CHIPID] = { CMU_DEVRST1, BIT(21) },
741
[RESET_I2C4] = { CMU_DEVRST1, BIT(22) },
742
[RESET_I2C5] = { CMU_DEVRST1, BIT(23) },
743
[RESET_CPU_SCNT] = { CMU_DEVRST1, BIT(30) }
744
};
745
746
static struct owl_clk_desc s900_clk_desc = {
747
.clks = s900_clks,
748
.num_clks = ARRAY_SIZE(s900_clks),
749
750
.hw_clks = &s900_hw_clks,
751
752
.resets = s900_resets,
753
.num_resets = ARRAY_SIZE(s900_resets),
754
};
755
756
static int s900_clk_probe(struct platform_device *pdev)
757
{
758
struct owl_clk_desc *desc;
759
struct owl_reset *reset;
760
int ret;
761
762
desc = &s900_clk_desc;
763
owl_clk_regmap_init(pdev, desc);
764
765
/*
766
* FIXME: Reset controller registration should be moved to
767
* common code, once all SoCs of Owl family supports it.
768
*/
769
reset = devm_kzalloc(&pdev->dev, sizeof(*reset), GFP_KERNEL);
770
if (!reset)
771
return -ENOMEM;
772
773
reset->rcdev.of_node = pdev->dev.of_node;
774
reset->rcdev.ops = &owl_reset_ops;
775
reset->rcdev.nr_resets = desc->num_resets;
776
reset->reset_map = desc->resets;
777
reset->regmap = desc->regmap;
778
779
ret = devm_reset_controller_register(&pdev->dev, &reset->rcdev);
780
if (ret)
781
dev_err(&pdev->dev, "Failed to register reset controller\n");
782
783
return owl_clk_probe(&pdev->dev, desc->hw_clks);
784
}
785
786
static const struct of_device_id s900_clk_of_match[] = {
787
{ .compatible = "actions,s900-cmu", },
788
{ /* sentinel */ }
789
};
790
791
static struct platform_driver s900_clk_driver = {
792
.probe = s900_clk_probe,
793
.driver = {
794
.name = "s900-cmu",
795
.of_match_table = s900_clk_of_match,
796
},
797
};
798
799
static int __init s900_clk_init(void)
800
{
801
return platform_driver_register(&s900_clk_driver);
802
}
803
core_initcall(s900_clk_init);
804
805