[PATCH 7/7] soc: mediatek: mtk-mmsys: Add resets for mt8167

From: Luca Leonardo Scorcia

Date: Fri Jul 17 2026 - 11:18:17 EST


The mt8167 SoC has 64 MMSYS resets, split in two contiguous 32-bits
registers, MMSYS_SW0_RST_B (0x140) and MMSYS_SW1_RST_B (0x144), as
also stated in the downstream kernel for the Lenovo Smart Clock
in the ddp_reg.h header.

Signed-off-by: Luca Leonardo Scorcia <l.scorcia@xxxxxxxxx>
---
drivers/soc/mediatek/mt8167-mmsys.h | 40 +++++++++++++++++++++++++++++
drivers/soc/mediatek/mtk-mmsys.c | 3 +++
2 files changed, 43 insertions(+)

diff --git a/drivers/soc/mediatek/mt8167-mmsys.h b/drivers/soc/mediatek/mt8167-mmsys.h
index eef14083c47b..b8f38ff8cf44 100644
--- a/drivers/soc/mediatek/mt8167-mmsys.h
+++ b/drivers/soc/mediatek/mt8167-mmsys.h
@@ -3,6 +3,46 @@
#ifndef __SOC_MEDIATEK_MT8167_MMSYS_H
#define __SOC_MEDIATEK_MT8167_MMSYS_H

+#include <linux/soc/mediatek/mtk-mmsys.h>
+#include <dt-bindings/reset/mediatek,mt8167-resets.h>
+
+#define MT8167_MMSYS_SW0_RST_B 0x140
+#define MT8167_MMSYS_SW1_RST_B 0x144
+
+/* MMSYS resets */
+static const u8 mmsys_mt8167_rst_tb[] = {
+ [MT8167_MMSYS_SW0_RST_B_SMI_COMMON] = MMSYS_RST_NR(0, 0),
+ [MT8167_MMSYS_SW0_RST_B_SMI_LARB0] = MMSYS_RST_NR(0, 1),
+ [MT8167_MMSYS_SW0_RST_B_CAM_MDP] = MMSYS_RST_NR(0, 2),
+ [MT8167_MMSYS_SW0_RST_B_MDP_RDMA0] = MMSYS_RST_NR(0, 3),
+ [MT8167_MMSYS_SW0_RST_B_MDP_RSZ0] = MMSYS_RST_NR(0, 4),
+ [MT8167_MMSYS_SW0_RST_B_MDP_RSZ1] = MMSYS_RST_NR(0, 5),
+ [MT8167_MMSYS_SW0_RST_B_MDP_TDSHP0] = MMSYS_RST_NR(0, 6),
+ [MT8167_MMSYS_SW0_RST_B_MDP_WDMA] = MMSYS_RST_NR(0, 7),
+ [MT8167_MMSYS_SW0_RST_B_MDP_WROT0] = MMSYS_RST_NR(0, 8),
+ [MT8167_MMSYS_SW0_RST_B_FAKE_ENG] = MMSYS_RST_NR(0, 9),
+ [MT8167_MMSYS_SW0_RST_B_MUTEX] = MMSYS_RST_NR(0, 10),
+ [MT8167_MMSYS_SW0_RST_B_DISP_OVL0] = MMSYS_RST_NR(0, 11),
+ [MT8167_MMSYS_SW0_RST_B_DISP_RDMA0] = MMSYS_RST_NR(0, 12),
+ [MT8167_MMSYS_SW0_RST_B_DISP_RDMA1] = MMSYS_RST_NR(0, 13),
+ [MT8167_MMSYS_SW0_RST_B_DISP_WDMA0] = MMSYS_RST_NR(0, 14),
+ [MT8167_MMSYS_SW0_RST_B_DISP_COLOR] = MMSYS_RST_NR(0, 15),
+ [MT8167_MMSYS_SW0_RST_B_DISP_CCORR] = MMSYS_RST_NR(0, 16),
+ [MT8167_MMSYS_SW0_RST_B_DISP_AAL] = MMSYS_RST_NR(0, 17),
+ [MT8167_MMSYS_SW0_RST_B_DISP_GAMMA] = MMSYS_RST_NR(0, 18),
+ [MT8167_MMSYS_SW0_RST_B_DISP_DITHER] = MMSYS_RST_NR(0, 19),
+ [MT8167_MMSYS_SW0_RST_B_DISP_UFOE] = MMSYS_RST_NR(0, 20),
+ [MT8167_MMSYS_SW0_RST_B_DISP_PWM] = MMSYS_RST_NR(0, 21),
+ [MT8167_MMSYS_SW0_RST_B_DSI0] = MMSYS_RST_NR(0, 22),
+ [MT8167_MMSYS_SW0_RST_B_DPI0] = MMSYS_RST_NR(0, 23),
+ /* bit 24 is SMI_COMMON again according to data sheet */
+ /* bit 25 is SMI_LARB0 again according to data sheet */
+ /* all other bits are not described in data sheet */
+ [MT8167_MMSYS_SW1_RST_B_LVDS_ENCODER] = MMSYS_RST_NR(1, 2),
+ [MT8167_MMSYS_SW1_RST_B_DPI1] = MMSYS_RST_NR(1, 3),
+ [MT8167_MMSYS_SW1_RST_B_HDMI] = MMSYS_RST_NR(1, 4),
+};
+
#define MT8167_DISP_REG_CONFIG_DISP_OVL0_MOUT_EN 0x030
#define MT8167_DISP_REG_CONFIG_DISP_DITHER_MOUT_EN 0x038
#define MT8167_DISP_REG_CONFIG_DISP_COLOR0_SEL_IN 0x058
diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-mmsys.c
index 2f3e0778bb17..abd96634b63c 100644
--- a/drivers/soc/mediatek/mtk-mmsys.c
+++ b/drivers/soc/mediatek/mtk-mmsys.c
@@ -57,6 +57,9 @@ static const struct mtk_mmsys_driver_data mt8167_mmsys_driver_data = {
.clk_driver = "clk-mt8167-mm",
.routes = mt8167_mmsys_routing_table,
.num_routes = ARRAY_SIZE(mt8167_mmsys_routing_table),
+ .sw0_rst_offset = MT8167_MMSYS_SW0_RST_B,
+ .rst_tb = mmsys_mt8167_rst_tb,
+ .num_resets = ARRAY_SIZE(mmsys_mt8167_rst_tb),
};

static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = {
--
2.43.0