clk: mediatek: Add MT8196 peripheral clock support

Add support for the MT8196 peripheral clock controller, which provides
clock gate control for dma/flashif/msdc/pwm/spi/uart.

Reviewed-by: Chen-Yu Tsai <wenst@chromium.org> # CLK_OPS_PARENT_ENABLE change
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Laura Nao <laura.nao@collabora.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile
index 031e7ac3880451247d020ea03d67e8b60d257050..8888ffd3d7bac49dc3cbe14b50ae48cd9bc76b0f 100644 (file)
--- a/drivers/clk/mediatek/Makefile
+++ b/drivers/clk/mediatek/Makefile
@@ -151,7 +151,8 @@ obj-$(CONFIG_COMMON_CLK_MT8195_VENCSYS) += clk-mt8195-venc.o
 obj-$(CONFIG_COMMON_CLK_MT8195_VPPSYS) += clk-mt8195-vpp0.o clk-mt8195-vpp1.o
 obj-$(CONFIG_COMMON_CLK_MT8195_WPESYS) += clk-mt8195-wpe.o
 obj-$(CONFIG_COMMON_CLK_MT8196) += clk-mt8196-apmixedsys.o clk-mt8196-topckgen.o \
-                                  clk-mt8196-topckgen2.o clk-mt8196-vlpckgen.o
+                                  clk-mt8196-topckgen2.o clk-mt8196-vlpckgen.o \
+                                  clk-mt8196-peri_ao.o
 obj-$(CONFIG_COMMON_CLK_MT8365) += clk-mt8365-apmixedsys.o clk-mt8365.o
 obj-$(CONFIG_COMMON_CLK_MT8365_APU) += clk-mt8365-apu.o
 obj-$(CONFIG_COMMON_CLK_MT8365_CAM) += clk-mt8365-cam.o

diff --git a/drivers/clk/mediatek/clk-mt8196-peri_ao.c b/drivers/clk/mediatek/clk-mt8196-peri_ao.c
new file mode 100644 (file)
index 0000000..f227a86
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt8196-peri_ao.c
@@ -0,0 +1,142 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2025 MediaTek Inc.
+ *                    Guangjie Song <guangjie.song@mediatek.com>
+ * Copyright (c) 2025 Collabora Ltd.
+ *                    Laura Nao <laura.nao@collabora.com>
+ */
+#include <dt-bindings/clock/mediatek,mt8196-clock.h>
+
+#include <linux/clk-provider.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+
+#include "clk-gate.h"
+#include "clk-mtk.h"
+
+static const struct mtk_gate_regs peri_ao0_cg_regs = {
+       .set_ofs = 0x24,
+       .clr_ofs = 0x28,
+       .sta_ofs = 0x10,
+};
+
+static const struct mtk_gate_regs peri_ao1_cg_regs = {
+       .set_ofs = 0x2c,
+       .clr_ofs = 0x30,
+       .sta_ofs = 0x14,
+};
+
+static const struct mtk_gate_regs peri_ao1_hwv_regs = {
+       .set_ofs = 0x0008,
+       .clr_ofs = 0x000c,
+       .sta_ofs = 0x2c04,
+};
+
+static const struct mtk_gate_regs peri_ao2_cg_regs = {
+       .set_ofs = 0x34,
+       .clr_ofs = 0x38,
+       .sta_ofs = 0x18,
+};
+
+#define GATE_PERI_AO0(_id, _name, _parent, _shift) {   \
+               .id = _id,                              \
+               .name = _name,                          \
+               .parent_name = _parent,                 \
+               .regs = &peri_ao0_cg_regs,              \
+               .shift = _shift,                        \
+               .ops = &mtk_clk_gate_ops_setclr,        \
+       }
+
+#define GATE_PERI_AO1(_id, _name, _parent, _shift) {   \
+               .id = _id,                              \
+               .name = _name,                          \
+               .parent_name = _parent,                 \
+               .regs = &peri_ao1_cg_regs,              \
+               .shift = _shift,                        \
+               .ops = &mtk_clk_gate_ops_setclr,        \
+       }
+
+#define GATE_HWV_PERI_AO1(_id, _name, _parent, _shift) {\
+               .id = _id,                              \
+               .name = _name,                          \
+               .parent_name = _parent,                 \
+               .regs = &peri_ao1_cg_regs,              \
+               .hwv_regs = &peri_ao1_hwv_regs,         \
+               .shift = _shift,                        \
+               .ops = &mtk_clk_gate_hwv_ops_setclr,    \
+       }
+
+#define GATE_PERI_AO2(_id, _name, _parent, _shift) {   \
+               .id = _id,                              \
+               .name = _name,                          \
+               .parent_name = _parent,                 \
+               .regs = &peri_ao2_cg_regs,              \
+               .shift = _shift,                        \
+               .ops = &mtk_clk_gate_ops_setclr,        \
+       }
+
+static const struct mtk_gate peri_ao_clks[] = {
+       /* PERI_AO0 */
+       GATE_PERI_AO0(CLK_PERI_AO_UART0_BCLK, "peri_ao_uart0_bclk", "uart", 0),
+       GATE_PERI_AO0(CLK_PERI_AO_UART1_BCLK, "peri_ao_uart1_bclk", "uart", 1),
+       GATE_PERI_AO0(CLK_PERI_AO_UART2_BCLK, "peri_ao_uart2_bclk", "uart", 2),
+       GATE_PERI_AO0(CLK_PERI_AO_UART3_BCLK, "peri_ao_uart3_bclk", "uart", 3),
+       GATE_PERI_AO0(CLK_PERI_AO_UART4_BCLK, "peri_ao_uart4_bclk", "uart", 4),
+       GATE_PERI_AO0(CLK_PERI_AO_UART5_BCLK, "peri_ao_uart5_bclk", "uart", 5),
+       GATE_PERI_AO0(CLK_PERI_AO_PWM_X16W_HCLK, "peri_ao_pwm_x16w", "p_axi", 12),
+       GATE_PERI_AO0(CLK_PERI_AO_PWM_X16W_BCLK, "peri_ao_pwm_x16w_bclk", "pwm", 13),
+       GATE_PERI_AO0(CLK_PERI_AO_PWM_PWM_BCLK0, "peri_ao_pwm_pwm_bclk0", "pwm", 14),
+       GATE_PERI_AO0(CLK_PERI_AO_PWM_PWM_BCLK1, "peri_ao_pwm_pwm_bclk1", "pwm", 15),
+       GATE_PERI_AO0(CLK_PERI_AO_PWM_PWM_BCLK2, "peri_ao_pwm_pwm_bclk2", "pwm", 16),
+       GATE_PERI_AO0(CLK_PERI_AO_PWM_PWM_BCLK3, "peri_ao_pwm_pwm_bclk3", "pwm", 17),
+       /* PERI_AO1 */
+       GATE_HWV_PERI_AO1(CLK_PERI_AO_SPI0_BCLK, "peri_ao_spi0_bclk", "spi0_b", 0),
+       GATE_HWV_PERI_AO1(CLK_PERI_AO_SPI1_BCLK, "peri_ao_spi1_bclk", "spi1_b", 2),
+       GATE_HWV_PERI_AO1(CLK_PERI_AO_SPI2_BCLK, "peri_ao_spi2_bclk", "spi2_b", 3),
+       GATE_HWV_PERI_AO1(CLK_PERI_AO_SPI3_BCLK, "peri_ao_spi3_bclk", "spi3_b", 4),
+       GATE_HWV_PERI_AO1(CLK_PERI_AO_SPI4_BCLK, "peri_ao_spi4_bclk", "spi4_b", 5),
+       GATE_HWV_PERI_AO1(CLK_PERI_AO_SPI5_BCLK, "peri_ao_spi5_bclk", "spi5_b", 6),
+       GATE_HWV_PERI_AO1(CLK_PERI_AO_SPI6_BCLK, "peri_ao_spi6_bclk", "spi6_b", 7),
+       GATE_HWV_PERI_AO1(CLK_PERI_AO_SPI7_BCLK, "peri_ao_spi7_bclk", "spi7_b", 8),
+       GATE_PERI_AO1(CLK_PERI_AO_FLASHIF_FLASH, "peri_ao_flashif_flash", "peri_ao_flashif_27m",
+                     18),
+       GATE_PERI_AO1(CLK_PERI_AO_FLASHIF_27M, "peri_ao_flashif_27m", "sflash", 19),
+       GATE_PERI_AO1(CLK_PERI_AO_FLASHIF_DRAM, "peri_ao_flashif_dram", "p_axi", 20),
+       GATE_PERI_AO1(CLK_PERI_AO_FLASHIF_AXI, "peri_ao_flashif_axi", "peri_ao_flashif_dram", 21),
+       GATE_PERI_AO1(CLK_PERI_AO_FLASHIF_BCLK, "peri_ao_flashif_bclk", "p_axi", 22),
+       GATE_PERI_AO1(CLK_PERI_AO_AP_DMA_X32W_BCLK, "peri_ao_ap_dma_x32w_bclk", "p_axi", 26),
+       /* PERI_AO2 */
+       GATE_PERI_AO2(CLK_PERI_AO_MSDC1_MSDC_SRC, "peri_ao_msdc1_msdc_src", "msdc30_1", 1),
+       GATE_PERI_AO2(CLK_PERI_AO_MSDC1_HCLK, "peri_ao_msdc1", "peri_ao_msdc1_axi", 2),
+       GATE_PERI_AO2(CLK_PERI_AO_MSDC1_AXI, "peri_ao_msdc1_axi", "p_axi", 3),
+       GATE_PERI_AO2(CLK_PERI_AO_MSDC1_HCLK_WRAP, "peri_ao_msdc1_h_wrap", "peri_ao_msdc1", 4),
+       GATE_PERI_AO2(CLK_PERI_AO_MSDC2_MSDC_SRC, "peri_ao_msdc2_msdc_src", "msdc30_2", 10),
+       GATE_PERI_AO2(CLK_PERI_AO_MSDC2_HCLK, "peri_ao_msdc2", "peri_ao_msdc2_axi", 11),
+       GATE_PERI_AO2(CLK_PERI_AO_MSDC2_AXI, "peri_ao_msdc2_axi", "p_axi", 12),
+       GATE_PERI_AO2(CLK_PERI_AO_MSDC2_HCLK_WRAP, "peri_ao_msdc2_h_wrap", "peri_ao_msdc2", 13),
+};
+
+static const struct mtk_clk_desc peri_ao_mcd = {
+       .clks = peri_ao_clks,
+       .num_clks = ARRAY_SIZE(peri_ao_clks),
+};
+
+static const struct of_device_id of_match_clk_mt8196_peri_ao[] = {
+       { .compatible = "mediatek,mt8196-pericfg-ao", .data = &peri_ao_mcd },
+       { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, of_match_clk_mt8196_peri_ao);
+
+static struct platform_driver clk_mt8196_peri_ao_drv = {
+       .probe = mtk_clk_simple_probe,
+       .remove = mtk_clk_simple_remove,
+       .driver = {
+               .name = "clk-mt8196-peri-ao",
+               .of_match_table = of_match_clk_mt8196_peri_ao,
+       },
+};
+
+MODULE_DESCRIPTION("MediaTek MT8196 pericfg_ao clock controller driver");
+module_platform_driver(clk_mt8196_peri_ao_drv);
+MODULE_LICENSE("GPL");