clk: mediatek: Add MT8195 peripheral clock support

Add MT8195 peripheral clock controller which provides clock
gate control for ethernet/flashif/pcie/ssusb.

Signed-off-by: Chun-Jie Chen <chun-jie.chen@mediatek.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20210914021633.26377-9-chun-jie.chen@mediatek.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile
index a142342a0cea1cc1dc1502b95a5e4f9378ac8906..0dbf4ddf4a097cd192f75bbd9bf24ed44999f598 100644 (file)
--- a/drivers/clk/mediatek/Makefile
+++ b/drivers/clk/mediatek/Makefile
@@ -80,6 +80,7 @@ obj-$(CONFIG_COMMON_CLK_MT8192_MSDC) += clk-mt8192-msdc.o
 obj-$(CONFIG_COMMON_CLK_MT8192_SCP_ADSP) += clk-mt8192-scp_adsp.o
 obj-$(CONFIG_COMMON_CLK_MT8192_VDECSYS) += clk-mt8192-vdec.o
 obj-$(CONFIG_COMMON_CLK_MT8192_VENCSYS) += clk-mt8192-venc.o
-obj-$(CONFIG_COMMON_CLK_MT8195) += clk-mt8195-apmixedsys.o clk-mt8195-topckgen.o
+obj-$(CONFIG_COMMON_CLK_MT8195) += clk-mt8195-apmixedsys.o clk-mt8195-topckgen.o \
+                                  clk-mt8195-peri_ao.o
 obj-$(CONFIG_COMMON_CLK_MT8516) += clk-mt8516.o
 obj-$(CONFIG_COMMON_CLK_MT8516_AUDSYS) += clk-mt8516-aud.o

diff --git a/drivers/clk/mediatek/clk-mt8195-peri_ao.c b/drivers/clk/mediatek/clk-mt8195-peri_ao.c
new file mode 100644 (file)
index 0000000..907a92b
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt8195-peri_ao.c
@@ -0,0 +1,62 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright (c) 2021 MediaTek Inc.
+// Author: Chun-Jie Chen <chun-jie.chen@mediatek.com>
+
+#include "clk-gate.h"
+#include "clk-mtk.h"
+
+#include <dt-bindings/clock/mt8195-clk.h>
+#include <linux/clk-provider.h>
+#include <linux/platform_device.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_FLASH, "peri_ao_flashif_flash", "top_spinor", 5),
+       GATE_PERI_AO(CLK_PERI_AO_SSUSB_1P_BUS, "peri_ao_ssusb_1p_bus", "top_usb_top_1p", 7),
+       GATE_PERI_AO(CLK_PERI_AO_SSUSB_1P_XHCI, "peri_ao_ssusb_1p_xhci", "top_ssusb_xhci_1p", 8),
+       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_SPINFI, "peri_ao_spinfi", "top_spinfi_bclk", 15),
+       GATE_PERI_AO(CLK_PERI_AO_ETHERNET_MAC, "peri_ao_ethernet_mac", "top_snps_eth_250m", 16),
+       GATE_PERI_AO(CLK_PERI_AO_NFI_H, "peri_ao_nfi_h", "top_axi", 19),
+       GATE_PERI_AO(CLK_PERI_AO_FNFI1X, "peri_ao_fnfi1x", "top_nfi1x", 20),
+       GATE_PERI_AO(CLK_PERI_AO_PCIE_P0_MEM, "peri_ao_pcie_p0_mem", "mem_466m", 24),
+       GATE_PERI_AO(CLK_PERI_AO_PCIE_P1_MEM, "peri_ao_pcie_p1_mem", "mem_466m", 25),
+};
+
+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_mt8195_peri_ao[] = {
+       {
+               .compatible = "mediatek,mt8195-pericfg_ao",
+               .data = &peri_ao_desc,
+       }, {
+               /* sentinel */
+       }
+};
+
+static struct platform_driver clk_mt8195_peri_ao_drv = {
+       .probe = mtk_clk_simple_probe,
+       .driver = {
+               .name = "clk-mt8195-peri_ao",
+               .of_match_table = of_match_clk_mt8195_peri_ao,
+       },
+};
+builtin_platform_driver(clk_mt8195_peri_ao_drv);