Il 09/03/23 14:54, Garmin.Chang ha scritto:
Add MT8188 ccusys clock controller which provides clock gate
control in Camera Computing Unit.
Signed-off-by: Garmin.Chang <Garmin.Chang@xxxxxxxxxxxx>
---
drivers/clk/mediatek/Makefile | 2 +-
drivers/clk/mediatek/clk-mt8188-ccu.c | 48 +++++++++++++++++++++++++++
2 files changed, 49 insertions(+), 1 deletion(-)
create mode 100644 drivers/clk/mediatek/clk-mt8188-ccu.c
diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile
index a4189d28cecc..fb66d25e98fd 100644
--- a/drivers/clk/mediatek/Makefile
+++ b/drivers/clk/mediatek/Makefile
@@ -93,7 +93,7 @@ obj-$(CONFIG_COMMON_CLK_MT8186) += clk-mt8186-mcu.o clk-mt8186-topckgen.o clk-mt
clk-mt8186-cam.o clk-mt8186-mdp.o clk-mt8186-ipe.o
obj-$(CONFIG_COMMON_CLK_MT8188) += clk-mt8188-apmixedsys.o clk-mt8188-topckgen.o \
clk-mt8188-peri_ao.o clk-mt8188-infra_ao.o \
- clk-mt8188-cam.o
+ clk-mt8188-cam.o clk-mt8188-ccu.o
clk-mt8188-cam and clk-mt8188-ccu can go under a different configuration option
for modularity.
For example...
obj-$(CONFIG_COMMON_CLK_MT8188_CAM) += ...ccu.o, ...cam.o
Please make sure, for boot performance purposes, to order them as:
obj-$(CONFIG_.....) += driver-clk1.o driver-requiring-clk1-clocks.o
obj-$(CONFIG_COMMON_CLK_MT8192) += clk-mt8192.o
obj-$(CONFIG_COMMON_CLK_MT8192_AUDSYS) += clk-mt8192-aud.o
obj-$(CONFIG_COMMON_CLK_MT8192_CAMSYS) += clk-mt8192-cam.o
diff --git a/drivers/clk/mediatek/clk-mt8188-ccu.c b/drivers/clk/mediatek/clk-mt8188-ccu.c
new file mode 100644
index 000000000000..b7380060f906
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt8188-ccu.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright (c) 2022 MediaTek Inc.
+// Author: Garmin Chang <garmin.chang@xxxxxxxxxxxx>
+
+#include <linux/clk-provider.h>
+#include <linux/platform_device.h>
+#include <dt-bindings/clock/mediatek,mt8188-clk.h>
+
+#include "clk-gate.h"
+#include "clk-mtk.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_LARB27, "ccu_larb27", "top_ccu", 0),
+ GATE_CCU(CLK_CCU_AHB, "ccu_ahb", "top_ccu", 1),
+ GATE_CCU(CLK_CCU_CCU0, "ccu_ccu0", "top_ccu", 2),
+};
+
+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_mt8188_ccu[] = {
+ { .compatible = "mediatek,mt8188-ccusys", .data = &ccu_desc},
Missing space: { [...] &ccu_desc },
+ { /* sentinel */ }
+};
+
+static struct platform_driver clk_mt8188_ccu_drv = {
+ .probe = mtk_clk_simple_probe,
+ .remove = mtk_clk_simple_remove,
+ .driver = {
+ .name = "clk-mt8188-ccu",
+ .of_match_table = of_match_clk_mt8188_ccu,
+ },
+};
+
+builtin_platform_driver(clk_mt8188_ccu_drv);
module_platform_driver
+MODULE_LICENSE("GPL");
