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Wed, 1 Jul 2026 15:11:35 +0200 (CEST) From: Louis-Alexis Eyraud Date: Wed, 01 Jul 2026 15:11:19 +0200 Subject: [PATCH 14/15] clk: mediatek: Add MT8189 scp clock support MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260701-mt8189-clocks-system-base-v1-14-2b048feea50a@collabora.com> References: <20260701-mt8189-clocks-system-base-v1-0-2b048feea50a@collabora.com> In-Reply-To: <20260701-mt8189-clocks-system-base-v1-0-2b048feea50a@collabora.com> To: Michael Turquette , Stephen Boyd , Brian Masney , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Chun-Jie Chen , Philipp Zabel , Edward-JW Yang , Richard Cochran Cc: kernel@collabora.com, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, netdev@vger.kernel.org, Irving-CH Lin , Louis-Alexis Eyraud X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1782911477; l=5001; i=louisalexis.eyraud@collabora.com; s=20250113; h=from:subject:message-id; bh=YoR0g+Zy5bmdtAdJUQSWYfnzy6l/TnhEKDxMDbaZxrM=; b=f2c9iq4eV9vNQq6ejkIcFlaXcqOfJHUSmk6AuQ83S8h4Q4pRr/884nTbJgSSDZ6NgGlOd5xK8 EwdGRhMOugkA12Vf3tfXQwKotaVlcHOArrcfFhbHesl9hkQVSzkaWp1 X-Developer-Key: i=louisalexis.eyraud@collabora.com; a=ed25519; pk=CHFBDB2Kqh4EHc6JIqFn69GhxJJAzc0Zr4e8QxtumuM= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260701_141137_994977_FE3D5BEC X-CRM114-Status: GOOD ( 17.45 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add support for the MT8189 scp clock controller, which provides clock gate control for System Control Processor. Co-developed-by: Irving-CH Lin Signed-off-by: Irving-CH Lin Co-developed-by: AngeloGioacchino Del Regno Signed-off-by: AngeloGioacchino Del Regno Signed-off-by: Louis-Alexis Eyraud --- drivers/clk/mediatek/Kconfig | 10 +++++ drivers/clk/mediatek/Makefile | 1 + drivers/clk/mediatek/clk-mt8189-scp.c | 77 +++++++++++++++++++++++++++++++++++ 3 files changed, 88 insertions(+) diff --git a/drivers/clk/mediatek/Kconfig b/drivers/clk/mediatek/Kconfig index bba631138b07..919a916f1f4f 100644 --- a/drivers/clk/mediatek/Kconfig +++ b/drivers/clk/mediatek/Kconfig @@ -872,6 +872,16 @@ config COMMON_CLK_MT8189_IIC the MT8189 chipset, improving the overall performance and power efficiency of the device. +config COMMON_CLK_MT8189_SCP + tristate "Clock driver for MediaTek MT8189 scp" + depends on COMMON_CLK_MT8189 + default COMMON_CLK_MT8189 + help + Enable this to support the clock framework for the System Control + Processor (SCP) in the MediaTek MT8189 SoC. This includes clock + management for SCP-related features, ensuring proper clock + distribution and gating for power efficiency and functionality. + config COMMON_CLK_MT8192 tristate "Clock driver for MediaTek MT8192" depends on ARM64 || COMPILE_TEST diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile index bfc075023d9b..a3a93a16b369 100644 --- a/drivers/clk/mediatek/Makefile +++ b/drivers/clk/mediatek/Makefile @@ -129,6 +129,7 @@ obj-$(CONFIG_COMMON_CLK_MT8189_BUS) += clk-mt8189-bus.o obj-$(CONFIG_COMMON_CLK_MT8189_DBGAO) += clk-mt8189-dbgao.o obj-$(CONFIG_COMMON_CLK_MT8189_DVFSRC) += clk-mt8189-dvfsrc.o obj-$(CONFIG_COMMON_CLK_MT8189_IIC) += clk-mt8189-iic.o +obj-$(CONFIG_COMMON_CLK_MT8189_SCP) += clk-mt8189-scp.o obj-$(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 diff --git a/drivers/clk/mediatek/clk-mt8189-scp.c b/drivers/clk/mediatek/clk-mt8189-scp.c new file mode 100644 index 000000000000..75197cd98b52 --- /dev/null +++ b/drivers/clk/mediatek/clk-mt8189-scp.c @@ -0,0 +1,77 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2025-2026 MediaTek Inc. + * Qiqi Wang + * Irving-CH Lin + * Copyright (C) 2026 Collabora Ltd. + * AngeloGioacchino Del Regno + * Louis-Alexis Eyraud + */ + +#include +#include +#include +#include + +#include "clk-mtk.h" +#include "clk-gate.h" + +#include + +static const struct mtk_gate_regs scp_cg_regs = { + .set_ofs = 0x4, + .clr_ofs = 0x8, + .sta_ofs = 0x4, +}; + +#define GATE_SCP(_id, _name, _parent, _shift) \ + GATE_MTK(_id, _name, _parent, &scp_cg_regs, _shift, &mtk_clk_gate_ops_setclr_inv) + +static const struct mtk_gate scp_clks[] = { + GATE_SCP(CLK_SCP_SET_SPI0, "scp_set_spi0", "clk26m", 0), + GATE_SCP(CLK_SCP_SET_SPI1, "scp_set_spi1", "clk26m", 1), +}; + +static const struct mtk_clk_desc scp_mcd = { + .clks = scp_clks, + .num_clks = ARRAY_SIZE(scp_clks), +}; + +static const struct mtk_gate_regs scp_iic_cg_regs = { + .set_ofs = 0x8, + .clr_ofs = 0x4, + .sta_ofs = 0x0, +}; + +#define GATE_SCP_IIC(_id, _name, _parent, _shift) \ + GATE_MTK(_id, _name, _parent, &scp_iic_cg_regs, _shift, &mtk_clk_gate_ops_setclr_inv) + +static const struct mtk_gate scp_iic_clks[] = { + GATE_SCP_IIC(CLK_SCP_IIC_I2C0_W1S, "scp_iic_i2c0_w1s", "vlp_scp_iic_sel", 0), + GATE_SCP_IIC(CLK_SCP_IIC_I2C1_W1S, "scp_iic_i2c1_w1s", "vlp_scp_iic_sel", 1), +}; + +static const struct mtk_clk_desc scp_iic_mcd = { + .clks = scp_iic_clks, + .num_clks = ARRAY_SIZE(scp_iic_clks), +}; + +static const struct of_device_id of_match_clk_mt8189_scp[] = { + { .compatible = "mediatek,mt8189-scp-clk", .data = &scp_mcd }, + { .compatible = "mediatek,mt8189-scp-i2c-clk", .data = &scp_iic_mcd }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, of_match_clk_mt8189_scp); + +static struct platform_driver clk_mt8189_scp_drv = { + .probe = mtk_clk_simple_probe, + .remove = mtk_clk_simple_remove, + .driver = { + .name = "clk-mt8189-scp", + .of_match_table = of_match_clk_mt8189_scp, + }, +}; +module_platform_driver(clk_mt8189_scp_drv); + +MODULE_DESCRIPTION("MediaTek MT8189 scp clocks driver"); +MODULE_LICENSE("GPL"); -- 2.54.0