From 393f3875c385cc6ae3b6069c3a88fe8e24d681ae Mon Sep 17 00:00:00 2001 From: Peter Geis Date: Wed, 26 Jun 2019 13:04:43 +0000 Subject: [PATCH] arm64: dts: rockchip: improve rk3328-roc-cc rgmii performance. Currently the rk3328-roc-cc ethernet is enabled using "snps,force_thresh_dma_mode". While this works, the performance leaves a lot to be desired. A previous attempt to improve performance used "snps,txpbl = <0x4>". This also allowed networking to function, but performance varied between boards. This patch takes that one step further. Set txpbl and rxpbl to 0x4. This can also be accomplished with "snps,pbl =<0x4>" which affects both. Also set "snps,aal" which forces address aligned DMA mode. Fixes: 4bc4d6013b7f (arm64: dts: rockchip: fix rk3328-roc-cc gmac2io stability issues) Signed-off-by: Peter Geis Tested-by: Leonidas P. Papadakos Signed-off-by: Heiko Stuebner --- arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts b/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts index 5d499c9086fb..bb40c163b05d 100644 --- a/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts +++ b/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts @@ -141,10 +141,12 @@ &gmac2io { phy-mode = "rgmii"; pinctrl-names = "default"; pinctrl-0 = <&rgmiim1_pins>; - snps,force_thresh_dma_mode; + snps,aal; snps,reset-gpio = <&gpio1 RK_PC2 GPIO_ACTIVE_LOW>; snps,reset-active-low; snps,reset-delays-us = <0 10000 50000>; + snps,rxpbl = <0x4>; + snps,txpbl = <0x4>; tx_delay = <0x24>; rx_delay = <0x18>; status = "okay"; -- 2.45.2