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Wed, 11 Feb 2026 11:06:21 -0800 (PST) From: Luca Leonardo Scorcia To: linux-mediatek@lists.infradead.org Cc: Luca Leonardo Scorcia , Wim Van Sebroeck , Guenter Roeck , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Philipp Zabel , linux-watchdog@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH 1/7] soc: mediatek: mtk-mmsys: Add resets for mt8167 Date: Wed, 11 Feb 2026 19:03:22 +0000 Message-ID: <0ab331c556d76ddfc7f287d6288c4f60f4ef90c8.1770836190.git.l.scorcia@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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 --- drivers/soc/mediatek/mt8167-mmsys.h | 3 +++ drivers/soc/mediatek/mtk-mmsys.c | 2 ++ 2 files changed, 5 insertions(+) diff --git a/drivers/soc/mediatek/mt8167-mmsys.h b/drivers/soc/mediatek/mt8= 167-mmsys.h index eef14083c47b..2d20b21fb0ea 100644 --- a/drivers/soc/mediatek/mt8167-mmsys.h +++ b/drivers/soc/mediatek/mt8167-mmsys.h @@ -18,6 +18,9 @@ #define MT8167_DSI0_SEL_IN_RDMA0 0x1 #define MT8167_DSI0_SEL_IN_MASK 0x3 =20 +#define MT8167_MMSYS_SW0_RST_B 0x140 +#define MT8167_MMSYS_SW1_RST_B 0x144 + static const struct mtk_mmsys_routes mt8167_mmsys_routing_table[] =3D { MMSYS_ROUTE(OVL0, COLOR0, MT8167_DISP_REG_CONFIG_DISP_OVL0_MOUT_EN, OVL0_MOUT_EN_COLOR0, diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-mm= sys.c index bb4639ca0b8c..03cbc393f978 100644 --- a/drivers/soc/mediatek/mtk-mmsys.c +++ b/drivers/soc/mediatek/mtk-mmsys.c @@ -57,6 +57,8 @@ static const struct mtk_mmsys_driver_data mt8167_mmsys_dr= iver_data =3D { .clk_driver =3D "clk-mt8167-mm", .routes =3D mt8167_mmsys_routing_table, .num_routes =3D ARRAY_SIZE(mt8167_mmsys_routing_table), + .sw0_rst_offset =3D MT8167_MMSYS_SW0_RST_B, + .num_resets =3D 64, }; 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Wed, 11 Feb 2026 11:06:23 -0800 (PST) From: Luca Leonardo Scorcia To: linux-mediatek@lists.infradead.org Cc: Luca Leonardo Scorcia , Wim Van Sebroeck , Guenter Roeck , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Philipp Zabel , linux-watchdog@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH 2/7] dt-bindings: mediatek: Add reset controller constants for mt8167 Date: Wed, 11 Feb 2026 19:03:23 +0000 Message-ID: <4786b688175eed89b899bdfd7e72505cafd7c3b0.1770836190.git.l.scorcia@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" This file comes from the Lenovo Smart Clock kernel sources. Signed-off-by: Luca Leonardo Scorcia --- include/dt-bindings/reset/mt8167-resets.h | 38 +++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 include/dt-bindings/reset/mt8167-resets.h diff --git a/include/dt-bindings/reset/mt8167-resets.h b/include/dt-binding= s/reset/mt8167-resets.h new file mode 100644 index 000000000000..f77c2ca897cf --- /dev/null +++ b/include/dt-bindings/reset/mt8167-resets.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */ +/* + * Copyright (c) 2015 MediaTek Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _DT_BINDINGS_RESET_CONTROLLER_MT8167 +#define _DT_BINDINGS_RESET_CONTROLLER_MT8167 + +/* TOPRGU resets */ +#define MT8167_TOPRGU_DDRPHY_FLASH_RST 0 /* reset ddrphy and flash pad ma= cro */ +#define MT8167_TOPRGU_AUD_PAD_RST 1 /* Write 1 to reset audio_tdm_in_pad,= audio_tdm_pad,audio_fifo */ +#define MT8167_TOPRGU_MM_RST 2 /* Write 1 to reset MMSYS */ +#define MT8167_TOPRGU_MFG_RST 3 /* Write 1 to reset MFG */ +#define MT8167_TOPRGU_MDSYS_RST 4 /* Write 1 to reset INFRA_AO */ +#define MT8167_TOPRGU_CONN_RST 5 /* Write 1 to reset CONNSYS WDT reset */ +#define MT8167_TOPRGU_PAD2CAM_DIG_MIPI_RX_RST 6 /* Write 1 to reset MM and= its related pad macro(DPI,MIPI_CFG,MIPI_TX) */ +#define MT8167_TOPRGU_DIG_MIPI_TX_RST 7 /* Write 1 to reset digi_mipi_tx = */ +#define MT8167_TOPRGU_SPI_PAD_MACRO_RST 8 /* Write 1 to reset SPI_PAD_MAC= RO */ +#define MT8167_TOPRGU_APMIXED_RST 10 /* Write 1 to reset APMIXEDSYS */ +#define MT8167_TOPRGU_VDEC_RST 11 /* Write 1 to reset VDEC module */ +#define MT8167_TOPRGU_CONN_MCU_RST 12 /* Write 1 to reset CONNSYS */ +#define MT8167_TOPRGU_EFUSE_RST 13 /* Write 1 to reset efuse */ +#define MT8167_TOPRGU_PWRAP_SPICTL_RST 14 /* Write 1 to reset pwrap_spict= l module */ +#define MT8167_TOPRGU_SW_RST_NUM 15 + +/* MMSYS resets */ +#define MT8167_MMSYS_SW0_RST_B_DISP_DSI0 22 + +#endif /* _DT_BINDINGS_RESET_CONTROLLER_MT8167 */ --=20 2.43.0 From nobody Thu Apr 2 17:43:09 2026 Received: from mail-wr1-f48.google.com (mail-wr1-f48.google.com [209.85.221.48]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4EBBB352C5A for ; 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charset="utf-8" Add support for the Top Reset Generation Unit/Watchdog Timer found on mt8167. Signed-off-by: Luca Leonardo Scorcia Reviewed-by: AngeloGioacchino Del Regno --- drivers/watchdog/mtk_wdt.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/watchdog/mtk_wdt.c b/drivers/watchdog/mtk_wdt.c index 91d110646e16..ded16173105b 100644 --- a/drivers/watchdog/mtk_wdt.c +++ b/drivers/watchdog/mtk_wdt.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include #include @@ -105,6 +106,10 @@ static const struct mtk_wdt_data mt7988_data =3D { .has_swsysrst_en =3D true, }; =20 +static const struct mtk_wdt_data mt8167_data =3D { + .toprgu_sw_rst_num =3D MT8167_TOPRGU_SW_RST_NUM, +}; + static const struct mtk_wdt_data mt8183_data =3D { .toprgu_sw_rst_num =3D MT8183_TOPRGU_SW_RST_NUM, }; @@ -498,6 +503,7 @@ static const struct of_device_id mtk_wdt_dt_ids[] =3D { { .compatible =3D "mediatek,mt6795-wdt", .data =3D &mt6795_data }, { .compatible =3D "mediatek,mt7986-wdt", .data =3D &mt7986_data }, { .compatible =3D "mediatek,mt7988-wdt", .data =3D &mt7988_data }, + { .compatible =3D "mediatek,mt8167-wdt", .data =3D &mt8167_data }, { .compatible =3D "mediatek,mt8183-wdt", .data =3D &mt8183_data }, { .compatible =3D "mediatek,mt8186-wdt", .data =3D &mt8186_data }, { .compatible =3D "mediatek,mt8188-wdt", .data =3D &mt8188_data }, --=20 2.43.0 From nobody Thu Apr 2 17:43:09 2026 Received: from mail-wm1-f52.google.com (mail-wm1-f52.google.com [209.85.128.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9E13A353EDC for ; 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charset="utf-8" Modify dt-binding to add support for mt8167 dts node of wdt Signed-off-by: Luca Leonardo Scorcia Reviewed-by: AngeloGioacchino Del Regno --- Documentation/devicetree/bindings/watchdog/mediatek,mtk-wdt.yaml | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/watchdog/mediatek,mtk-wdt.ya= ml b/Documentation/devicetree/bindings/watchdog/mediatek,mtk-wdt.yaml index 953629cb9558..f514be8a5851 100644 --- a/Documentation/devicetree/bindings/watchdog/mediatek,mtk-wdt.yaml +++ b/Documentation/devicetree/bindings/watchdog/mediatek,mtk-wdt.yaml @@ -26,6 +26,7 @@ properties: - mediatek,mt6795-wdt - mediatek,mt7986-wdt - mediatek,mt7988-wdt + - mediatek,mt8167-wdt - mediatek,mt8183-wdt - mediatek,mt8186-wdt - mediatek,mt8188-wdt --=20 2.43.0 From nobody Thu Apr 2 17:43:09 2026 Received: from mail-wr1-f53.google.com (mail-wr1-f53.google.com [209.85.221.53]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 42FB234B691 for ; 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charset="utf-8" The watchdog driver for mt8167 relies on DT data, so the fallback compatible mt8516 won't work, need to update watchdog device node to sync with watchdog dt-binding document. Signed-off-by: Luca Leonardo Scorcia --- arch/arm64/boot/dts/mediatek/mt8167.dtsi | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm64/boot/dts/mediatek/mt8167.dtsi b/arch/arm64/boot/dts= /mediatek/mt8167.dtsi index fd17daa13dba..caf51f203dd3 100644 --- a/arch/arm64/boot/dts/mediatek/mt8167.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8167.dtsi @@ -48,6 +48,13 @@ apmixedsys: apmixedsys@10018000 { #clock-cells =3D <1>; }; =20 + watchdog@10007000 { + compatible =3D "mediatek,mt8167-wdt"; + reg =3D <0 0x10007000 0 0x1000>; + interrupts =3D ; + #reset-cells =3D <1>; + }; + scpsys: syscon@10006000 { compatible =3D "mediatek,mt8167-scpsys", "syscon", "simple-mfd"; reg =3D <0 0x10006000 0 0x1000>; --=20 2.43.0 From nobody Thu Apr 2 17:43:09 2026 Received: from mail-wr1-f54.google.com (mail-wr1-f54.google.com [209.85.221.54]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D4E3D353ED8 for ; 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charset="utf-8" DSI hardware reset is needed to prevent different settings between the bootloader and the kernel. Signed-off-by: Luca Leonardo Scorcia --- arch/arm64/boot/dts/mediatek/mt8167.dtsi | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm64/boot/dts/mediatek/mt8167.dtsi b/arch/arm64/boot/dts= /mediatek/mt8167.dtsi index caf51f203dd3..ee2792d53b2c 100644 --- a/arch/arm64/boot/dts/mediatek/mt8167.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8167.dtsi @@ -8,6 +8,7 @@ #include #include #include +#include =20 #include "mt8167-pinfunc.h" =20 @@ -189,6 +190,7 @@ dsi: dsi@14012000 { <&mmsys CLK_MM_DSI_DIGITAL>, <&mipi_tx>; clock-names =3D "engine", "digital", "hs"; + resets =3D <&mmsys MT8167_MMSYS_SW0_RST_B_DISP_DSI0>; phys =3D <&mipi_tx>; phy-names =3D "dphy"; status =3D "disabled"; @@ -295,6 +297,7 @@ mmsys: syscon@14000000 { compatible =3D "mediatek,mt8167-mmsys", "syscon"; reg =3D <0 0x14000000 0 0x1000>; #clock-cells =3D <1>; + #reset-cells =3D <1>; }; =20 smi_common: smi@14017000 { --=20 2.43.0 From nobody Thu Apr 2 17:43:09 2026 Received: from mail-wr1-f41.google.com (mail-wr1-f41.google.com [209.85.221.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 80A62352FAB for ; 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Wed, 11 Feb 2026 11:06:36 -0800 (PST) Received: from luca-vm.lan ([154.61.61.58]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-4378e122df9sm211223f8f.15.2026.02.11.11.06.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Feb 2026 11:06:36 -0800 (PST) From: Luca Leonardo Scorcia To: linux-mediatek@lists.infradead.org Cc: Luca Leonardo Scorcia , Wim Van Sebroeck , Guenter Roeck , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Philipp Zabel , linux-watchdog@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH 7/7] arm64: dts: mt8167: Add additional mmsys reset bits Date: Wed, 11 Feb 2026 19:03:28 +0000 Message-ID: <6f803b6dd1f61728c17afadd2fe983e9fdc0c109.1770836190.git.l.scorcia@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Some extra mmsys reset bits are defined in the Lenovo Smart Clock kernel sources - file cmdq_mdp.c Signed-off-by: Luca Leonardo Scorcia --- include/dt-bindings/reset/mt8167-resets.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/include/dt-bindings/reset/mt8167-resets.h b/include/dt-binding= s/reset/mt8167-resets.h index f77c2ca897cf..b379f8f023d5 100644 --- a/include/dt-bindings/reset/mt8167-resets.h +++ b/include/dt-bindings/reset/mt8167-resets.h @@ -33,6 +33,15 @@ #define MT8167_TOPRGU_SW_RST_NUM 15 =20 /* MMSYS resets */ +#define MT8167_MMSYS_SW0_RST_B_SMI_COMMON 0 +#define MT8167_MMSYS_SW0_RST_B_SMI_LARB 1 +#define MT8167_MMSYS_SW0_RST_B_CAM_MDP 2 +#define MT8167_MMSYS_SW0_RST_B_MDP_RDMA0 3 +#define MT8167_MMSYS_SW0_RST_B_MDP_RSZ0 4 +#define MT8167_MMSYS_SW0_RST_B_MDP_RSZ1 5 +#define MT8167_MMSYS_SW0_RST_B_MDP_TDSHP0 6 +#define MT8167_MMSYS_SW0_RST_B_MDP_WDMA 7 +#define MT8167_MMSYS_SW0_RST_B_MDP_WROT0 8 #define MT8167_MMSYS_SW0_RST_B_DISP_DSI0 22 =20 #endif /* _DT_BINDINGS_RESET_CONTROLLER_MT8167 */ --=20 2.43.0