[v3,11/24] clk: mediatek: Add MT8195 ccusys clock support

Commit Message

Chun-Jie Chen Sept. 14, 2021, 2:16 a.m. UTC

Add MT8195 ccusys clock controller which provides clock gate
control in Camera Computing Unit.

Signed-off-by: Chun-Jie Chen <[e-mail]>
Reviewed-by: Chen-Yu Tsai <[e-mail]>
---
 drivers/clk/mediatek/Makefile         |  2 +-
 drivers/clk/mediatek/clk-mt8195-ccu.c | 50 +++++++++++++++++++++++++++
 2 files changed, 51 insertions(+), 1 deletion(-)
 create mode 100644 drivers/clk/mediatek/clk-mt8195-ccu.c

Comments

Stephen Boyd Sept. 14, 2021, 10:18 p.m. UTC | #1

Quoting Chun-Jie Chen (2021-09-13 19:16:20)
> Add MT8195 ccusys clock controller which provides clock gate
> control in Camera Computing Unit.
> 
> Signed-off-by: Chun-Jie Chen <[e-mail]>
> Reviewed-by: Chen-Yu Tsai <[e-mail]>
> ---

Applied to clk-next

Patch

diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile
index e9bee5cca9c4..3ba2a4f0a99c 100644
--- a/drivers/clk/mediatek/Makefile
+++ b/drivers/clk/mediatek/Makefile
@@ -82,6 +82,6 @@  obj-$(CONFIG_COMMON_CLK_MT8192_VDECSYS) += clk-mt8192-vdec.o
 obj-$(CONFIG_COMMON_CLK_MT8192_VENCSYS) += clk-mt8192-venc.o
 obj-$(CONFIG_COMMON_CLK_MT8195) += clk-mt8195-apmixedsys.o clk-mt8195-topckgen.o \
 				   clk-mt8195-peri_ao.o clk-mt8195-infra_ao.o \
-				   clk-mt8195-cam.o
+				   clk-mt8195-cam.o clk-mt8195-ccu.o
 obj-$(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-ccu.c b/drivers/clk/mediatek/clk-mt8195-ccu.c
new file mode 100644
index 000000000000..f846f1d73605
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt8195-ccu.c
@@ -0,0 +1,50 @@ 
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright (c) 2021 MediaTek Inc.
+// Author: Chun-Jie Chen <[e-mail]>
+
+#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 ccu_cg_regs = {
+	.set_ofs = 0x4,
+	.clr_ofs = 0x8,
+	.sta_ofs = 0x0,
+};
+
+#define GATE_CCU(_id, _name, _parent, _shift)			\
+	GATE_MTK(_id, _name, _parent, &ccu_cg_regs, _shift, &mtk_clk_gate_ops_setclr)
+
+static const struct mtk_gate ccu_clks[] = {
+	GATE_CCU(CLK_CCU_LARB18, "ccu_larb18", "top_ccu", 0),
+	GATE_CCU(CLK_CCU_AHB, "ccu_ahb", "top_ccu", 1),
+	GATE_CCU(CLK_CCU_CCU0, "ccu_ccu0", "top_ccu", 2),
+	GATE_CCU(CLK_CCU_CCU1, "ccu_ccu1", "top_ccu", 3),
+};
+
+static const struct mtk_clk_desc ccu_desc = {
+	.clks = ccu_clks,
+	.num_clks = ARRAY_SIZE(ccu_clks),
+};
+
+static const struct of_device_id of_match_clk_mt8195_ccu[] = {
+	{
+		.compatible = "mediatek,mt8195-ccusys",
+		.data = &ccu_desc,
+	}, {
+		/* sentinel */
+	}
+};
+
+static struct platform_driver clk_mt8195_ccu_drv = {
+	.probe = mtk_clk_simple_probe,
+	.driver = {
+		.name = "clk-mt8195-ccu",
+		.of_match_table = of_match_clk_mt8195_ccu,
+	},
+};
+builtin_platform_driver(clk_mt8195_ccu_drv);