[openwrt/openwrt] mediatek: filogic: add SD card support to GatoNetworks GDSP

LEDE Commits lede-commits at lists.infradead.org
Fri Jul 18 04:37:16 PDT 2025 

dangole pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/072ae5a76ba8aa595fdf485cd9a149271b06b64f

commit 072ae5a76ba8aa595fdf485cd9a149271b06b64f
Author: Enrico Mioso <mrkiko.rs at gmail.com>
AuthorDate: Fri Jul 11 13:22:56 2025 +0200

    mediatek: filogic: add SD card support to GatoNetworks GDSP
    
    The device is equipped with a GPS module, reporting data via /dev/ttyS1.
    A TF card reader is also present. Only one of those components can be
    used at once, since they share some PINs.
    This commit adds two devicetree overlays to allow for the user to select
    the desired configuration. Another overlay configuration to allow booting
    from SD card is provided.
    
    Signed-off-by: Enrico Mioso <mrkiko.rs at gmail.com>
---
 .../dts/mt7981b-gatonetworks-gdsp-gps.dtso         | 15 +++++
 .../dts/mt7981b-gatonetworks-gdsp-sd-boot.dtso     | 30 ++++++++++
 .../mediatek/dts/mt7981b-gatonetworks-gdsp-sd.dtso | 15 +++++
 .../mediatek/dts/mt7981b-gatonetworks-gdsp.dts     | 69 +++++++++++++++++++++-
 .../filogic/base-files/lib/upgrade/platform.sh     |  1 +
 target/linux/mediatek/image/filogic.mk             | 20 ++++++-
 6 files changed, 147 insertions(+), 3 deletions(-)

diff --git a/target/linux/mediatek/dts/mt7981b-gatonetworks-gdsp-gps.dtso b/target/linux/mediatek/dts/mt7981b-gatonetworks-gdsp-gps.dtso
new file mode 100644
index 0000000000..f2175d81e6
--- /dev/null
+++ b/target/linux/mediatek/dts/mt7981b-gatonetworks-gdsp-gps.dtso
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "gatonetworks,gdsp", "mediatek,mt7981";
+
+	fragment at 0 {
+		target = <&uart1>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+};
diff --git a/target/linux/mediatek/dts/mt7981b-gatonetworks-gdsp-sd-boot.dtso b/target/linux/mediatek/dts/mt7981b-gatonetworks-gdsp-sd-boot.dtso
new file mode 100644
index 0000000000..46a07cf683
--- /dev/null
+++ b/target/linux/mediatek/dts/mt7981b-gatonetworks-gdsp-sd-boot.dtso
@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "gatonetworks,gdsp", "mediatek,mt7981";
+
+	fragment at 1 {
+		target = <&mmc0>;
+		__overlay__ {
+			card at 0 {
+				compatible = "mmc-card";
+				reg = <0>;
+
+				partitions {
+					compatible = "gpt-partitions";
+
+					sdmmc_fit: block-partition-fit {
+						partname = "FIT";
+					};
+				};
+			};
+		};
+	};
+};
+
+&{/chosen} {
+	rootdisk = <&sdmmc_fit>;
+};
diff --git a/target/linux/mediatek/dts/mt7981b-gatonetworks-gdsp-sd.dtso b/target/linux/mediatek/dts/mt7981b-gatonetworks-gdsp-sd.dtso
new file mode 100644
index 0000000000..cc822810f6
--- /dev/null
+++ b/target/linux/mediatek/dts/mt7981b-gatonetworks-gdsp-sd.dtso
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "gatonetworks,gdsp", "mediatek,mt7981";
+
+	fragment at 0 {
+		target = <&mmc0>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+};
diff --git a/target/linux/mediatek/dts/mt7981b-gatonetworks-gdsp.dts b/target/linux/mediatek/dts/mt7981b-gatonetworks-gdsp.dts
index ad09ff8bcd..2719b17656 100644
--- a/target/linux/mediatek/dts/mt7981b-gatonetworks-gdsp.dts
+++ b/target/linux/mediatek/dts/mt7981b-gatonetworks-gdsp.dts
@@ -127,6 +127,23 @@
 	status = "okay";
 };
 
+&mmc0 {
+	status = "disabled";
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+	pinctrl-names = "default", "state_uhs";
+	pinctrl-0 = <&mmc0_pins_default>;
+	pinctrl-1 = <&mmc0_pins_uhs>;
+	bus-width = <4>;
+	max-frequency = <50000000>;
+	cap-sd-highspeed;
+	vmmc-supply = <&reg_3p3v>;
+	vqmmc-supply = <&reg_3p3v>;
+	no-mmc;
+	no-sdio;
+};
+
 &eth {
 	status = "okay";
 
@@ -334,6 +351,56 @@
 		};
 	};
 
+	mmc0_pins_default: mmc0-pins-default {
+		mux {
+			function = "flash";
+			groups = "emmc_45";
+		};
+		conf-cmd-dat {
+			pins = "SPI0_CLK", "SPI0_MOSI", "SPI0_MISO",
+				"SPI0_CS",  "SPI0_HOLD", "SPI0_WP",
+				"SPI1_CLK", "SPI1_MOSI", "SPI1_MISO";
+			input-enable;
+			drive-strength = <MTK_DRIVE_4mA>;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
+		};
+		conf-clk {
+			pins = "SPI1_CS";
+			drive-strength = <MTK_DRIVE_8mA>;
+			bias-pull-down = <MTK_PUPD_SET_R1R0_10>;
+		};
+		conf-rst {
+			pins = "PWM0";
+			drive-strength = <MTK_DRIVE_4mA>;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
+		};
+	};
+
+	mmc0_pins_uhs: mmc0-pins-uhs {
+		mux {
+			function = "flash";
+			groups = "emmc_45";
+		};
+		conf-cmd-dat {
+			pins = "SPI0_CLK", "SPI0_MOSI", "SPI0_MISO",
+				"SPI0_CS",  "SPI0_HOLD", "SPI0_WP",
+				"SPI1_CLK", "SPI1_MOSI", "SPI1_MISO";
+			input-enable;
+			drive-strength = <MTK_DRIVE_4mA>;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
+		};
+		conf-clk {
+			pins = "SPI1_CS";
+			drive-strength = <MTK_DRIVE_8mA>;
+			bias-pull-down = <MTK_PUPD_SET_R1R0_10>;
+		};
+		conf-rst {
+			pins = "PWM0";
+			drive-strength = <MTK_DRIVE_4mA>;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
+		};
+	};
+
 	uart2_pins: uart2-pins {
 		mux {
 			function = "uart";
@@ -368,7 +435,7 @@
 &uart1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart1_pins>;
-	status = "okay";
+	status = "disabled";
 };
 
 &uart2 {
diff --git a/target/linux/mediatek/filogic/base-files/lib/upgrade/platform.sh b/target/linux/mediatek/filogic/base-files/lib/upgrade/platform.sh
index e08e265ab3..d0e2fff6eb 100755
--- a/target/linux/mediatek/filogic/base-files/lib/upgrade/platform.sh
+++ b/target/linux/mediatek/filogic/base-files/lib/upgrade/platform.sh
@@ -269,6 +269,7 @@ platform_copy_config() {
 	bananapi,bpi-r4-2g5|\
 	bananapi,bpi-r4-poe|\
 	cmcc,rax3000m|\
+	gatonetworks,gdsp|\
 	mediatek,mt7988a-rfb)
 		if [ "$CI_METHOD" = "emmc" ]; then
 			emmc_copy_config
diff --git a/target/linux/mediatek/image/filogic.mk b/target/linux/mediatek/image/filogic.mk
index 78d7e2d249..7c7d33098e 100644
--- a/target/linux/mediatek/image/filogic.mk
+++ b/target/linux/mediatek/image/filogic.mk
@@ -30,6 +30,14 @@ define Build/mt7988-bl31-uboot
 	cat $(STAGING_DIR_IMAGE)/mt7988_$1-u-boot.fip >> $@
 endef
 
+define Build/simplefit
+	cp $@ $@.tmp 2>/dev/null || true
+	ptgen -g -o $@.tmp -a 1 -l 1024 \
+	-t 0x2e -N FIT		-p $(CONFIG_TARGET_ROOTFS_PARTSIZE)M at 17k
+	cat $@.tmp >> $@
+	rm $@.tmp
+endef
+
 define Build/mt798x-gpt
 	cp $@ $@.tmp 2>/dev/null || true
 	ptgen -g -o $@.tmp -a 1 -l 1024 \
@@ -948,15 +956,23 @@ define Device/gatonetworks_gdsp
   DEVICE_VENDOR := GatoNetworks
   DEVICE_MODEL := gdsp
   DEVICE_DTS := mt7981b-gatonetworks-gdsp
+  DEVICE_DTS_OVERLAY := \
+  mt7981b-gatonetworks-gdsp-gps \
+  mt7981b-gatonetworks-gdsp-sd \
+  mt7981b-gatonetworks-gdsp-sd-boot
   DEVICE_DTS_DIR := ../dts
+  DEVICE_DTC_FLAGS := --pad 4096
   IMAGES := sysupgrade.itb
   IMAGE_SIZE := 32768k
-  DEVICE_PACKAGES := fitblk kmod-mt7915e kmod-mt7981-firmware \
+  DEVICE_PACKAGES := e2fsprogs f2fsck mkf2fs fitblk \
+    kmod-mt7915e kmod-mt7981-firmware \
     kmod-usb-net-qmi-wwan kmod-usb-serial-option kmod-usb3 \
     mt7981-wo-firmware -kmod-phy-aquantia
-  ARTIFACTS := preloader.bin bl31-uboot.fip
+  ARTIFACTS := preloader.bin bl31-uboot.fip sdcard.img.gz
   ARTIFACT/preloader.bin := mt7981-bl2 nor-ddr3
   ARTIFACT/bl31-uboot.fip := mt7981-bl31-uboot gatonetworks_gdsp
+  ARTIFACT/sdcard.img.gz := simplefit |\
+  append-image squashfs-sysupgrade.itb | check-size | gzip
   KERNEL := kernel-bin | gzip
   KERNEL_INITRAMFS := kernel-bin | lzma | \
 	fit lzma $$(KDIR)/image-$$(firstword $$(DEVICE_DTS)).dtb with-initrd | pad-to 64k

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