clk: mediatek: Add MT8186 mfgsys clock support

Add MT8186 mfg clock controller which provides clock gate
control for GPU.

Signed-off-by: Chun-Jie Chen <chun-jie.chen@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Miles Chen <miles.chen@mediatek.com>
Link: https://lore.kernel.org/r/20220409132251.31725-8-chun-jie.chen@mediatek.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

1 files changed, 48 insertions, 0 deletions

diff --git a/drivers/clk/mediatek/clk-mt8186-mfg.c b/drivers/clk/mediatek/clk-mt8186-mfg.c
new file mode 100644
index 000000000000..f1f92216f894
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt8186-mfg.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright (c) 2022 MediaTek Inc.
+// Author: Chun-Jie Chen <chun-jie.chen@mediatek.com>
+
+#include <linux/clk-provider.h>
+#include <linux/platform_device.h>
+#include <dt-bindings/clock/mt8186-clk.h>
+
+#include "clk-gate.h"
+#include "clk-mtk.h"
+
+static const struct mtk_gate_regs mfg_cg_regs = {
+	.set_ofs = 0x4,
+	.clr_ofs = 0x8,
+	.sta_ofs = 0x0,
+};
+
+#define GATE_MFG(_id, _name, _parent, _shift)			\
+	GATE_MTK(_id, _name, _parent, &mfg_cg_regs, _shift, &mtk_clk_gate_ops_setclr)
+
+static const struct mtk_gate mfg_clks[] = {
+	GATE_MFG(CLK_MFG_BG3D, "mfg_bg3d", "top_mfg", 0),
+};
+
+static const struct mtk_clk_desc mfg_desc = {
+	.clks = mfg_clks,
+	.num_clks = ARRAY_SIZE(mfg_clks),
+};
+
+static const struct of_device_id of_match_clk_mt8186_mfg[] = {
+	{
+		.compatible = "mediatek,mt8186-mfgsys",
+		.data = &mfg_desc,
+	}, {
+		/* sentinel */
+	}
+};
+
+static struct platform_driver clk_mt8186_mfg_drv = {
+	.probe = mtk_clk_simple_probe,
+	.remove = mtk_clk_simple_remove,
+	.driver = {
+		.name = "clk-mt8186-mfg",
+		.of_match_table = of_match_clk_mt8186_mfg,
+	},
+};
+builtin_platform_driver(clk_mt8186_mfg_drv);