clk: mediatek: Add MT8188 peripheral clock support

Add MT8188 peripheral clock controller which provides clock
gate control for ethernet/flashif/pcie/ssusb.
Signed-off-by: Garmin.Chang <Garmin.Chang@mediatek.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230331123621.16167-5-Garmin.Chang@mediatek.comSigned-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/mediatek/Makefile

@@ -100,7 +100,8 @@ obj-$(CONFIG_COMMON_CLK_MT8186_MMSYS) += clk-mt8186-mm.o
 obj-$(CONFIG_COMMON_CLK_MT8186_VDECSYS) += clk-mt8186-vdec.o
 obj-$(CONFIG_COMMON_CLK_MT8186_VENCSYS) += clk-mt8186-venc.o
 obj-$(CONFIG_COMMON_CLK_MT8186_WPESYS) += clk-mt8186-wpe.o
-obj-$(CONFIG_COMMON_CLK_MT8188) += clk-mt8188-apmixedsys.o clk-mt8188-topckgen.o
+obj-$(CONFIG_COMMON_CLK_MT8188) += clk-mt8188-apmixedsys.o clk-mt8188-topckgen.o \
+				   clk-mt8188-peri_ao.o
 obj-$(CONFIG_COMMON_CLK_MT8192) += clk-mt8192-apmixedsys.o clk-mt8192.o
 obj-$(CONFIG_COMMON_CLK_MT8192_AUDSYS) += clk-mt8192-aud.o
 obj-$(CONFIG_COMMON_CLK_MT8192_CAMSYS) += clk-mt8192-cam.o

drivers/clk/mediatek/clk-mt8188-peri_ao.c

+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2022 MediaTek Inc.
+ * Author: Garmin Chang <garmin.chang@mediatek.com>
+ */
+
+#include <dt-bindings/clock/mediatek,mt8188-clk.h>
+#include <linux/clk-provider.h>
+#include <linux/platform_device.h>
+
+#include "clk-gate.h"
+#include "clk-mtk.h"
+
+static const struct mtk_gate_regs peri_ao_cg_regs = {
+	.set_ofs = 0x10,
+	.clr_ofs = 0x14,
+	.sta_ofs = 0x18,
+};
+
+#define GATE_PERI_AO(_id, _name, _parent, _shift)			\
+	GATE_MTK(_id, _name, _parent, &peri_ao_cg_regs, _shift, &mtk_clk_gate_ops_setclr)
+
+static const struct mtk_gate peri_ao_clks[] = {
+	GATE_PERI_AO(CLK_PERI_AO_ETHERNET, "peri_ao_ethernet", "top_axi", 0),
+	GATE_PERI_AO(CLK_PERI_AO_ETHERNET_BUS, "peri_ao_ethernet_bus", "top_axi", 1),
+	GATE_PERI_AO(CLK_PERI_AO_FLASHIF_BUS, "peri_ao_flashif_bus", "top_axi", 3),
+	GATE_PERI_AO(CLK_PERI_AO_FLASHIF_26M, "peri_ao_flashif_26m", "clk26m", 4),
+	GATE_PERI_AO(CLK_PERI_AO_FLASHIFLASHCK, "peri_ao_flashiflashck", "top_spinor", 5),
+	GATE_PERI_AO(CLK_PERI_AO_SSUSB_2P_BUS, "peri_ao_ssusb_2p_bus", "top_usb_top_2p", 9),
+	GATE_PERI_AO(CLK_PERI_AO_SSUSB_2P_XHCI, "peri_ao_ssusb_2p_xhci", "top_ssusb_xhci_2p", 10),
+	GATE_PERI_AO(CLK_PERI_AO_SSUSB_3P_BUS, "peri_ao_ssusb_3p_bus", "top_usb_top_3p", 11),
+	GATE_PERI_AO(CLK_PERI_AO_SSUSB_3P_XHCI, "peri_ao_ssusb_3p_xhci", "top_ssusb_xhci_3p", 12),
+	GATE_PERI_AO(CLK_PERI_AO_SSUSB_BUS, "peri_ao_ssusb_bus", "top_usb_top", 13),
+	GATE_PERI_AO(CLK_PERI_AO_SSUSB_XHCI, "peri_ao_ssusb_xhci", "top_ssusb_xhci", 14),
+	GATE_PERI_AO(CLK_PERI_AO_ETHERNET_MAC, "peri_ao_ethernet_mac_clk", "top_snps_eth_250m", 16),
+	GATE_PERI_AO(CLK_PERI_AO_PCIE_P0_FMEM, "peri_ao_pcie_p0_fmem", "hd_466m_fmem_ck", 24),
+};
+
+static const struct mtk_clk_desc peri_ao_desc = {
+	.clks = peri_ao_clks,
+	.num_clks = ARRAY_SIZE(peri_ao_clks),
+};
+
+static const struct of_device_id of_match_clk_mt8188_peri_ao[] = {
+	{ .compatible = "mediatek,mt8188-pericfg-ao", .data = &peri_ao_desc },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, of_match_clk_mt8188_peri_ao);
+
+static struct platform_driver clk_mt8188_peri_ao_drv = {
+	.probe = mtk_clk_simple_probe,
+	.remove = mtk_clk_simple_remove,
+	.driver = {
+		.name = "clk-mt8188-peri_ao",
+		.of_match_table = of_match_clk_mt8188_peri_ao,
+	},
+};
+module_platform_driver(clk_mt8188_peri_ao_drv);
+MODULE_LICENSE("GPL");