linux-kernel - [PATCH v3 13/22] arm64: dts: mediatek: mt7988a-bpi-r4: Add dt overlays for sd + emmc

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Message-ID: <20241217091238.16032-14-linux@fw-web.de>
Date: Tue, 17 Dec 2024 10:12:27 +0100
From: Frank Wunderlich <linux@...web.de>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: Frank Wunderlich <frank-w@...lic-files.de>,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org
Subject: [PATCH v3 13/22] arm64: dts: mediatek: mt7988a-bpi-r4: Add dt overlays for sd + emmc

From: Frank Wunderlich <frank-w@...lic-files.de>

Bananapi R4 can use the mmc controller either with sd card or the onboard
emmc. The used device is selected through hardware-switches and probed in
bootloader.
Add devicetree overlays for both mmc configurations.

Signed-off-by: Frank Wunderlich <frank-w@...lic-files.de>
---
 arch/arm64/boot/dts/mediatek/Makefile         |  3 ++
 .../mt7988a-bananapi-bpi-r4-emmc.dtso         | 33 +++++++++++++++++++
 .../mediatek/mt7988a-bananapi-bpi-r4-sd.dtso  | 31 +++++++++++++++++
 3 files changed, 67 insertions(+)
 create mode 100644 arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4-emmc.dtso
 create mode 100644 arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4-sd.dtso

diff --git a/arch/arm64/boot/dts/mediatek/Makefile b/arch/arm64/boot/dts/mediatek/Makefile
index 8fd7b2bb7a15..33e244898849 100644
--- a/arch/arm64/boot/dts/mediatek/Makefile
+++ b/arch/arm64/boot/dts/mediatek/Makefile
@@ -21,6 +21,8 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-bananapi-bpi-r3-sd.dtbo
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-rfb.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986b-rfb.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4.dtb
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4-emmc.dtbo
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4-sd.dtbo
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8167-pumpkin.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-elm.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-elm-hana.dtb
@@ -90,3 +92,4 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt8516-pumpkin.dtb
 # Device tree overlays support
 DTC_FLAGS_mt7986a-bananapi-bpi-r3 := -@
 DTC_FLAGS_mt7986a-bananapi-bpi-r3-mini := -@
+DTC_FLAGS_mt7988a-bananapi-bpi-r4 := -@
diff --git a/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4-emmc.dtso b/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4-emmc.dtso
new file mode 100644
index 000000000000..3e320b2f83d5
--- /dev/null
+++ b/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4-emmc.dtso
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2021 MediaTek Inc.
+ * Author: Frank Wunderlich <frank-w@...lic-files.de>
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "bananapi,bpi-r4", "mediatek,mt7988a";
+};
+
+&{/soc/mmc@...30000} {
+	pinctrl-names = "default", "state_uhs";
+	pinctrl-0 = <&mmc0_pins_emmc_51>;
+	pinctrl-1 = <&mmc0_pins_emmc_51>;
+	bus-width = <8>;
+	max-frequency = <200000000>;
+	cap-mmc-highspeed;
+	mmc-hs200-1_8v;
+	mmc-hs400-1_8v;
+	hs400-ds-delay = <0x12814>;
+	vqmmc-supply = <&reg_1p8v>;
+	vmmc-supply = <&reg_3p3v>;
+	non-removable;
+	no-sd;
+	no-sdio;
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+};
+
diff --git a/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4-sd.dtso b/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4-sd.dtso
new file mode 100644
index 000000000000..663c6345dd31
--- /dev/null
+++ b/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4-sd.dtso
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2023 MediaTek Inc.
+ * Author: Frank Wunderlich <frank-w@...lic-files.de>
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	compatible = "bananapi,bpi-r4", "mediatek,mt7988a";
+};
+
+&{/soc/mmc@...30000} {
+	pinctrl-names = "default", "state_uhs";
+	pinctrl-0 = <&mmc0_pins_sdcard>;
+	pinctrl-1 = <&mmc0_pins_sdcard>;
+	cd-gpios = <&pio 12 GPIO_ACTIVE_LOW>;
+	bus-width = <4>;
+	max-frequency = <52000000>;
+	cap-sd-highspeed;
+	vmmc-supply = <&reg_3p3v>;
+	vqmmc-supply = <&reg_3p3v>;
+	no-mmc;
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+};
+
-- 
2.43.0