diff options
Diffstat (limited to 'drivers/clk/mediatek/clk-mt6795-infracfg.c')
| -rw-r--r-- | drivers/clk/mediatek/clk-mt6795-infracfg.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/drivers/clk/mediatek/clk-mt6795-infracfg.c b/drivers/clk/mediatek/clk-mt6795-infracfg.c new file mode 100644 index 000000000000..df7eed6e071e --- /dev/null +++ b/drivers/clk/mediatek/clk-mt6795-infracfg.c @@ -0,0 +1,151 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2022 Collabora Ltd. + * Author: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> + */ + +#include <dt-bindings/clock/mediatek,mt6795-clk.h> +#include <dt-bindings/reset/mediatek,mt6795-resets.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include "clk-cpumux.h" +#include "clk-gate.h" +#include "clk-mtk.h" +#include "reset.h" + +#define GATE_ICG(_id, _name, _parent, _shift) \ + GATE_MTK(_id, _name, _parent, &infra_cg_regs, \ + _shift, &mtk_clk_gate_ops_no_setclr) + +static const struct mtk_gate_regs infra_cg_regs = { + .set_ofs = 0x0040, + .clr_ofs = 0x0044, + .sta_ofs = 0x0048, +}; + +static const char * const ca53_c0_parents[] = { + "clk26m", + "armca53pll", + "mainpll", + "univpll" +}; + +static const char * const ca53_c1_parents[] = { + "clk26m", + "armca53pll", + "mainpll", + "univpll" +}; + +static const struct mtk_composite cpu_muxes[] = { + MUX(CLK_INFRA_CA53_C0_SEL, "infra_ca53_c0_sel", ca53_c0_parents, 0x00, 0, 2), + MUX(CLK_INFRA_CA53_C1_SEL, "infra_ca53_c1_sel", ca53_c1_parents, 0x00, 2, 2), +}; + +static const struct mtk_gate infra_gates[] = { + GATE_ICG(CLK_INFRA_DBGCLK, "infra_dbgclk", "axi_sel", 0), + GATE_ICG(CLK_INFRA_SMI, "infra_smi", "mm_sel", 1), + GATE_ICG(CLK_INFRA_AUDIO, "infra_audio", "aud_intbus_sel", 5), + GATE_ICG(CLK_INFRA_GCE, "infra_gce", "axi_sel", 6), + GATE_ICG(CLK_INFRA_L2C_SRAM, "infra_l2c_sram", "axi_sel", 7), + GATE_ICG(CLK_INFRA_M4U, "infra_m4u", "mem_sel", 8), + GATE_ICG(CLK_INFRA_MD1MCU, "infra_md1mcu", "clk26m", 9), + GATE_ICG(CLK_INFRA_MD1BUS, "infra_md1bus", "axi_sel", 10), + GATE_ICG(CLK_INFRA_MD1DBB, "infra_dbb", "axi_sel", 11), + GATE_ICG(CLK_INFRA_DEVICE_APC, "infra_devapc", "clk26m", 12), + GATE_ICG(CLK_INFRA_TRNG, "infra_trng", "axi_sel", 13), + GATE_ICG(CLK_INFRA_MD1LTE, "infra_md1lte", "axi_sel", 14), + GATE_ICG(CLK_INFRA_CPUM, "infra_cpum", "cpum_ck", 15), + GATE_ICG(CLK_INFRA_KP, "infra_kp", "axi_sel", 16), +}; + +static u16 infra_ao_rst_ofs[] = { 0x30, 0x34 }; + +static u16 infra_ao_idx_map[] = { + [MT6795_INFRA_RST0_SCPSYS_RST] = 0 * RST_NR_PER_BANK + 5, + [MT6795_INFRA_RST0_PMIC_WRAP_RST] = 0 * RST_NR_PER_BANK + 7, + [MT6795_INFRA_RST1_MIPI_DSI_RST] = 1 * RST_NR_PER_BANK + 4, + [MT6795_INFRA_RST1_MIPI_CSI_RST] = 1 * RST_NR_PER_BANK + 7, + [MT6795_INFRA_RST1_MM_IOMMU_RST] = 1 * RST_NR_PER_BANK + 15, +}; + +static const struct mtk_clk_rst_desc clk_rst_desc = { + .version = MTK_RST_SET_CLR, + .rst_bank_ofs = infra_ao_rst_ofs, + .rst_bank_nr = ARRAY_SIZE(infra_ao_rst_ofs), + .rst_idx_map = infra_ao_idx_map, + .rst_idx_map_nr = ARRAY_SIZE(infra_ao_idx_map), +}; + +static const struct of_device_id of_match_clk_mt6795_infracfg[] = { + { .compatible = "mediatek,mt6795-infracfg" }, + { /* sentinel */ } +}; + +static int clk_mt6795_infracfg_probe(struct platform_device *pdev) +{ + struct clk_hw_onecell_data *clk_data; + struct device_node *node = pdev->dev.of_node; + void __iomem *base; + int ret; + + base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(base)) + return PTR_ERR(base); + + clk_data = mtk_alloc_clk_data(CLK_INFRA_NR_CLK); + if (!clk_data) + return -ENOMEM; + + ret = mtk_register_reset_controller_with_dev(&pdev->dev, &clk_rst_desc); + if (ret) + goto free_clk_data; + + ret = mtk_clk_register_gates(node, infra_gates, ARRAY_SIZE(infra_gates), clk_data); + if (ret) + goto free_clk_data; + + ret = mtk_clk_register_cpumuxes(node, cpu_muxes, ARRAY_SIZE(cpu_muxes), clk_data); + if (ret) + goto unregister_gates; + + ret = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data); + if (ret) + goto unregister_cpumuxes; + + return 0; + +unregister_cpumuxes: + mtk_clk_unregister_cpumuxes(cpu_muxes, ARRAY_SIZE(cpu_muxes), clk_data); +unregister_gates: + mtk_clk_unregister_gates(infra_gates, ARRAY_SIZE(infra_gates), clk_data); +free_clk_data: + mtk_free_clk_data(clk_data); + return ret; +} + +static int clk_mt6795_infracfg_remove(struct platform_device *pdev) +{ + struct device_node *node = pdev->dev.of_node; + struct clk_hw_onecell_data *clk_data = platform_get_drvdata(pdev); + + of_clk_del_provider(node); + mtk_clk_unregister_cpumuxes(cpu_muxes, ARRAY_SIZE(cpu_muxes), clk_data); + mtk_clk_unregister_gates(infra_gates, ARRAY_SIZE(infra_gates), clk_data); + mtk_free_clk_data(clk_data); + + return 0; +} + +static struct platform_driver clk_mt6795_infracfg_drv = { + .driver = { + .name = "clk-mt6795-infracfg", + .of_match_table = of_match_clk_mt6795_infracfg, + }, + .probe = clk_mt6795_infracfg_probe, + .remove = clk_mt6795_infracfg_remove, +}; +module_platform_driver(clk_mt6795_infracfg_drv); + +MODULE_DESCRIPTION("MediaTek MT6795 infracfg clocks driver"); +MODULE_LICENSE("GPL"); |