Mon Dec 2 10:50:34 +09 2019

patches/linux-5.4.1/0001-dts-no-need-ethernet-reset-defination-for-khadas-VIM.patch

@@ -0,0 +1,39 @@
+From a6a37b4845c94ddc7943f8f8eb8b9500aa4db4af Mon Sep 17 00:00:00 2001
+From: hyphop <art@khadas.com>
+Date: Mon, 2 Dec 2019 10:44:32 +0900
+Subject: [PATCH] dts no need ethernet reset defination for khadas VIM2!
+
+because broken `ifconfig eth0 down && ifconfig eth0 up` - iface never up again
+> ifconfig: ioctl 0x8914 failed: Device or resource busy
+
+$ dmesg -c
+[  562.109408] meson8b-dwmac c9410000.ethernet eth0: PHY [0.2009087f:00] driver [RTL8211F Gigabit Ethernet]
+[  562.109498] meson8b-dwmac c9410000.ethernet eth0: phy: setting supported 00,00000000,000062ff advertising 00,00000000,000062ff
+[  562.224926] meson8b-dwmac c9410000.ethernet: Failed to reset the dma
+[  562.225000] meson8b-dwmac c9410000.ethernet eth0: stmmac_hw_setup: DMA engine initialization failed
+[  562.225053] meson8b-dwmac c9410000.ethernet eth0: stmmac_open: Hw setup failed
+
+more details: https://forum.khadas.com/t/vim2-ethernet-problem-with-mainline-kernel/5817/7
+
+NOTE: ethernet works again without reset defination
+---
+ arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts | 3 +--
+ 1 file changed, 1 insertion(+), 2 deletions(-)
+
+diff --git a/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts b/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts
+index f25ddd18a..76a41d182 100644
+--- a/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts
++++ b/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts
+@@ -252,8 +252,7 @@
+
+ 		reset-assert-us = <10000>;
+ 		reset-deassert-us = <30000>;
+-		reset-gpios = <&gpio GPIOZ_14 GPIO_ACTIVE_LOW>;
+-
++		max-speed = <1000>;
+ 		interrupt-parent = <&gpio_intc>;
+ 		/* MAC_INTR on GPIOZ_15 */
+ 		interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
+-- 
+2.17.1
+