diff options
Diffstat (limited to 'drivers/clk/mediatek/clk-mt6797.c')
| -rw-r--r-- | drivers/clk/mediatek/clk-mt6797.c | 139 |
1 files changed, 69 insertions, 70 deletions
diff --git a/drivers/clk/mediatek/clk-mt6797.c b/drivers/clk/mediatek/clk-mt6797.c index 5702bc974ed9..fb59e71af58e 100644 --- a/drivers/clk/mediatek/clk-mt6797.c +++ b/drivers/clk/mediatek/clk-mt6797.c @@ -1,24 +1,15 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2016 MediaTek Inc. * Author: Kevin Chen <kevin-cw.chen@mediatek.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/of.h> -#include <linux/of_address.h> -#include <linux/of_device.h> #include <linux/platform_device.h> -#include "clk-mtk.h" #include "clk-gate.h" +#include "clk-mtk.h" +#include "clk-pll.h" #include <dt-bindings/clock/mt6797-clk.h> @@ -324,6 +315,10 @@ static const char * const anc_md32_parents[] = { "univpll_d5", }; +/* + * Clock mux ddrphycfg is needed by the DRAM controller. We mark it as + * critical as otherwise the system will hang after boot. + */ static const struct mtk_composite top_muxes[] = { MUX(CLK_TOP_MUX_ULPOSC_AXI_CK_MUX_PRE, "ulposc_axi_ck_mux_pre", ulposc_axi_ck_mux_pre_parents, 0x0040, 3, 1), @@ -331,8 +326,8 @@ static const struct mtk_composite top_muxes[] = { ulposc_axi_ck_mux_parents, 0x0040, 2, 1), MUX(CLK_TOP_MUX_AXI, "axi_sel", axi_parents, 0x0040, 0, 2), - MUX(CLK_TOP_MUX_DDRPHYCFG, "ddrphycfg_sel", ddrphycfg_parents, - 0x0040, 16, 2), + MUX_FLAGS(CLK_TOP_MUX_DDRPHYCFG, "ddrphycfg_sel", ddrphycfg_parents, + 0x0040, 16, 2, CLK_IS_CRITICAL | CLK_SET_RATE_PARENT), MUX(CLK_TOP_MUX_MM, "mm_sel", mm_parents, 0x0040, 24, 2), MUX_GATE(CLK_TOP_MUX_PWM, "pwm_sel", pwm_parents, 0x0050, 0, 3, 7), @@ -386,24 +381,26 @@ static const struct mtk_composite top_muxes[] = { static int mtk_topckgen_init(struct platform_device *pdev) { - struct clk_onecell_data *clk_data; + struct clk_hw_onecell_data *clk_data; void __iomem *base; struct device_node *node = pdev->dev.of_node; - struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - base = devm_ioremap_resource(&pdev->dev, res); + base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(base)) return PTR_ERR(base); clk_data = mtk_alloc_clk_data(CLK_TOP_NR); + if (!clk_data) + return -ENOMEM; mtk_clk_register_factors(top_fixed_divs, ARRAY_SIZE(top_fixed_divs), clk_data); - mtk_clk_register_composites(top_muxes, ARRAY_SIZE(top_muxes), base, + mtk_clk_register_composites(&pdev->dev, top_muxes, + ARRAY_SIZE(top_muxes), base, &mt6797_clk_lock, clk_data); - return of_clk_add_provider(node, of_clk_src_onecell_get, clk_data); + return of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data); } static const struct mtk_gate_regs infra0_cg_regs = { @@ -424,33 +421,27 @@ static const struct mtk_gate_regs infra2_cg_regs = { .sta_ofs = 0x00b0, }; -#define GATE_ICG0(_id, _name, _parent, _shift) { \ - .id = _id, \ - .name = _name, \ - .parent_name = _parent, \ - .regs = &infra0_cg_regs, \ - .shift = _shift, \ - .ops = &mtk_clk_gate_ops_setclr, \ -} +#define GATE_ICG0(_id, _name, _parent, _shift) \ + GATE_MTK(_id, _name, _parent, &infra0_cg_regs, _shift, &mtk_clk_gate_ops_setclr) -#define GATE_ICG1(_id, _name, _parent, _shift) { \ - .id = _id, \ - .name = _name, \ - .parent_name = _parent, \ - .regs = &infra1_cg_regs, \ - .shift = _shift, \ - .ops = &mtk_clk_gate_ops_setclr, \ -} +#define GATE_ICG1(_id, _name, _parent, _shift) \ + GATE_MTK(_id, _name, _parent, &infra1_cg_regs, _shift, &mtk_clk_gate_ops_setclr) -#define GATE_ICG2(_id, _name, _parent, _shift) { \ - .id = _id, \ - .name = _name, \ - .parent_name = _parent, \ - .regs = &infra2_cg_regs, \ - .shift = _shift, \ - .ops = &mtk_clk_gate_ops_setclr, \ -} +#define GATE_ICG1_FLAGS(_id, _name, _parent, _shift, _flags) \ + GATE_MTK_FLAGS(_id, _name, _parent, &infra1_cg_regs, _shift, \ + &mtk_clk_gate_ops_setclr, _flags) +#define GATE_ICG2(_id, _name, _parent, _shift) \ + GATE_MTK(_id, _name, _parent, &infra2_cg_regs, _shift, &mtk_clk_gate_ops_setclr) + +#define GATE_ICG2_FLAGS(_id, _name, _parent, _shift, _flags) \ + GATE_MTK_FLAGS(_id, _name, _parent, &infra2_cg_regs, _shift, \ + &mtk_clk_gate_ops_setclr, _flags) + +/* + * Clock gates dramc and dramc_b are needed by the DRAM controller. + * We mark them as critical as otherwise the system will hang after boot. + */ static const struct mtk_gate infra_clks[] = { GATE_ICG0(CLK_INFRA_PMIC_TMR, "infra_pmic_tmr", "ulposc", 0), GATE_ICG0(CLK_INFRA_PMIC_AP, "infra_pmic_ap", "pmicspi_sel", 1), @@ -505,7 +496,8 @@ static const struct mtk_gate infra_clks[] = { GATE_ICG1(CLK_INFRA_CCIF_AP, "infra_ccif_ap", "axi_sel", 23), GATE_ICG1(CLK_INFRA_AUDIO, "infra_audio", "axi_sel", 25), GATE_ICG1(CLK_INFRA_CCIF_MD, "infra_ccif_md", "axi_sel", 26), - GATE_ICG1(CLK_INFRA_DRAMC_F26M, "infra_dramc_f26m", "clk26m", 31), + GATE_ICG1_FLAGS(CLK_INFRA_DRAMC_F26M, "infra_dramc_f26m", + "clk26m", 31, CLK_IS_CRITICAL), GATE_ICG2(CLK_INFRA_I2C4, "infra_i2c4", "axi_sel", 0), GATE_ICG2(CLK_INFRA_I2C_APPM, "infra_i2c_appm", "axi_sel", 1), GATE_ICG2(CLK_INFRA_I2C_GPUPM, "infra_i2c_gpupm", "axi_sel", 2), @@ -516,7 +508,8 @@ static const struct mtk_gate infra_clks[] = { GATE_ICG2(CLK_INFRA_I2C5, "infra_i2c5", "axi_sel", 7), GATE_ICG2(CLK_INFRA_SYS_CIRQ, "infra_sys_cirq", "axi_sel", 8), GATE_ICG2(CLK_INFRA_SPI1, "infra_spi1", "spi_sel", 10), - GATE_ICG2(CLK_INFRA_DRAMC_B_F26M, "infra_dramc_b_f26m", "clk26m", 11), + GATE_ICG2_FLAGS(CLK_INFRA_DRAMC_B_F26M, "infra_dramc_b_f26m", + "clk26m", 11, CLK_IS_CRITICAL), GATE_ICG2(CLK_INFRA_ANC_MD32, "infra_anc_md32", "anc_md32_sel", 12), GATE_ICG2(CLK_INFRA_ANC_MD32_32K, "infra_anc_md32_32k", "clk26m", 13), GATE_ICG2(CLK_INFRA_DVFS_SPM1, "infra_dvfs_spm1", "axi_sel", 15), @@ -546,7 +539,7 @@ static const struct mtk_fixed_factor infra_fixed_divs[] = { FACTOR(CLK_INFRA_13M, "clk13m", "clk26m", 1, 2), }; -static struct clk_onecell_data *infra_clk_data; +static struct clk_hw_onecell_data *infra_clk_data; static void mtk_infrasys_init_early(struct device_node *node) { @@ -554,15 +547,18 @@ static void mtk_infrasys_init_early(struct device_node *node) if (!infra_clk_data) { infra_clk_data = mtk_alloc_clk_data(CLK_INFRA_NR); + if (!infra_clk_data) + return; for (i = 0; i < CLK_INFRA_NR; i++) - infra_clk_data->clks[i] = ERR_PTR(-EPROBE_DEFER); + infra_clk_data->hws[i] = ERR_PTR(-EPROBE_DEFER); } mtk_clk_register_factors(infra_fixed_divs, ARRAY_SIZE(infra_fixed_divs), infra_clk_data); - r = of_clk_add_provider(node, of_clk_src_onecell_get, infra_clk_data); + r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, + infra_clk_data); if (r) pr_err("%s(): could not register clock provider: %d\n", __func__, r); @@ -573,28 +569,27 @@ CLK_OF_DECLARE_DRIVER(mtk_infra, "mediatek,mt6797-infracfg", static int mtk_infrasys_init(struct platform_device *pdev) { - int r, i; + int i; struct device_node *node = pdev->dev.of_node; if (!infra_clk_data) { infra_clk_data = mtk_alloc_clk_data(CLK_INFRA_NR); + if (!infra_clk_data) + return -ENOMEM; } else { for (i = 0; i < CLK_INFRA_NR; i++) { - if (infra_clk_data->clks[i] == ERR_PTR(-EPROBE_DEFER)) - infra_clk_data->clks[i] = ERR_PTR(-ENOENT); + if (infra_clk_data->hws[i] == ERR_PTR(-EPROBE_DEFER)) + infra_clk_data->hws[i] = ERR_PTR(-ENOENT); } } - mtk_clk_register_gates(node, infra_clks, ARRAY_SIZE(infra_clks), - infra_clk_data); + mtk_clk_register_gates(&pdev->dev, node, infra_clks, + ARRAY_SIZE(infra_clks), infra_clk_data); mtk_clk_register_factors(infra_fixed_divs, ARRAY_SIZE(infra_fixed_divs), infra_clk_data); - r = of_clk_add_provider(node, of_clk_src_onecell_get, infra_clk_data); - if (r) - return r; - - return 0; + return of_clk_add_hw_provider(node, of_clk_hw_onecell_get, + infra_clk_data); } #define MT6797_PLL_FMAX (3000UL * MHZ) @@ -629,31 +624,31 @@ static int mtk_infrasys_init(struct platform_device *pdev) NULL) static const struct mtk_pll_data plls[] = { - PLL(CLK_APMIXED_MAINPLL, "mainpll", 0x0220, 0x022C, 0xF0000101, PLL_AO, + PLL(CLK_APMIXED_MAINPLL, "mainpll", 0x0220, 0x022C, 0xF0000100, PLL_AO, 21, 0x220, 4, 0x0, 0x224, 0), - PLL(CLK_APMIXED_UNIVPLL, "univpll", 0x0230, 0x023C, 0xFE000011, 0, 7, + PLL(CLK_APMIXED_UNIVPLL, "univpll", 0x0230, 0x023C, 0xFE000010, 0, 7, 0x230, 4, 0x0, 0x234, 14), - PLL(CLK_APMIXED_MFGPLL, "mfgpll", 0x0240, 0x024C, 0x00000101, 0, 21, + PLL(CLK_APMIXED_MFGPLL, "mfgpll", 0x0240, 0x024C, 0x00000100, 0, 21, 0x244, 24, 0x0, 0x244, 0), - PLL(CLK_APMIXED_MSDCPLL, "msdcpll", 0x0250, 0x025C, 0x00000121, 0, 21, + PLL(CLK_APMIXED_MSDCPLL, "msdcpll", 0x0250, 0x025C, 0x00000120, 0, 21, 0x250, 4, 0x0, 0x254, 0), - PLL(CLK_APMIXED_IMGPLL, "imgpll", 0x0260, 0x026C, 0x00000121, 0, 21, + PLL(CLK_APMIXED_IMGPLL, "imgpll", 0x0260, 0x026C, 0x00000120, 0, 21, 0x260, 4, 0x0, 0x264, 0), - PLL(CLK_APMIXED_TVDPLL, "tvdpll", 0x0270, 0x027C, 0xC0000121, 0, 21, + PLL(CLK_APMIXED_TVDPLL, "tvdpll", 0x0270, 0x027C, 0xC0000120, 0, 21, 0x270, 4, 0x0, 0x274, 0), - PLL(CLK_APMIXED_CODECPLL, "codecpll", 0x0290, 0x029C, 0x00000121, 0, 21, + PLL(CLK_APMIXED_CODECPLL, "codecpll", 0x0290, 0x029C, 0x00000120, 0, 21, 0x290, 4, 0x0, 0x294, 0), - PLL(CLK_APMIXED_VDECPLL, "vdecpll", 0x02E4, 0x02F0, 0x00000121, 0, 21, + PLL(CLK_APMIXED_VDECPLL, "vdecpll", 0x02E4, 0x02F0, 0x00000120, 0, 21, 0x2E4, 4, 0x0, 0x2E8, 0), - PLL(CLK_APMIXED_APLL1, "apll1", 0x02A0, 0x02B0, 0x00000131, 0, 31, + PLL(CLK_APMIXED_APLL1, "apll1", 0x02A0, 0x02B0, 0x00000130, 0, 31, 0x2A0, 4, 0x2A8, 0x2A4, 0), - PLL(CLK_APMIXED_APLL2, "apll2", 0x02B4, 0x02C4, 0x00000131, 0, 31, + PLL(CLK_APMIXED_APLL2, "apll2", 0x02B4, 0x02C4, 0x00000130, 0, 31, 0x2B4, 4, 0x2BC, 0x2B8, 0), }; static int mtk_apmixedsys_init(struct platform_device *pdev) { - struct clk_onecell_data *clk_data; + struct clk_hw_onecell_data *clk_data; struct device_node *node = pdev->dev.of_node; clk_data = mtk_alloc_clk_data(CLK_APMIXED_NR); @@ -662,7 +657,7 @@ static int mtk_apmixedsys_init(struct platform_device *pdev) mtk_clk_register_plls(node, plls, ARRAY_SIZE(plls), clk_data); - return of_clk_add_provider(node, of_clk_src_onecell_get, clk_data); + return of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data); } static const struct of_device_id of_match_clk_mt6797[] = { @@ -679,6 +674,7 @@ static const struct of_device_id of_match_clk_mt6797[] = { /* sentinel */ } }; +MODULE_DEVICE_TABLE(of, of_match_clk_mt6797); static int clk_mt6797_probe(struct platform_device *pdev) { @@ -712,3 +708,6 @@ static int __init clk_mt6797_init(void) } arch_initcall(clk_mt6797_init); + +MODULE_DESCRIPTION("MediaTek MT6797 main clocks driver"); +MODULE_LICENSE("GPL"); |