From: Miquel Raynal Date: Mon, 8 Apr 2019 07:41:47 +0000 (+0200) Subject: ARM: dts: sunxi: Improve A33 NAND transfers by using DMA X-Git-Tag: v5.2-rc1~45^2~26^2~14 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=dccd30ea59922d1eacff925400acd66afcd05cff;p=linux.git ARM: dts: sunxi: Improve A33 NAND transfers by using DMA In the current state, A33 NAND controllers use PIO during transfers. Throughput can be increased thanks to the use of DMA (mostly during reads, because of the ECC pipelining feature). Besides the usual addition of DMA DT properties, because the A33 NAND DMA handling is different than for older SoCs, we must also update the compatible which has recently been introduced for this purpose. Signed-off-by: Miquel Raynal Signed-off-by: Maxime Ripard --- diff --git a/arch/arm/boot/dts/sun8i-a23-a33.dtsi b/arch/arm/boot/dts/sun8i-a23-a33.dtsi index c17bd7677ffb..f76aad0c5d4d 100644 --- a/arch/arm/boot/dts/sun8i-a23-a33.dtsi +++ b/arch/arm/boot/dts/sun8i-a23-a33.dtsi @@ -162,13 +162,15 @@ dma: dma-controller@1c02000 { }; nfc: nand-controller@1c03000 { - compatible = "allwinner,sun4i-a10-nand"; + compatible = "allwinner,sun8i-a23-nand-controller"; reg = <0x01c03000 0x1000>; interrupts = ; clocks = <&ccu CLK_BUS_NAND>, <&ccu CLK_NAND>; clock-names = "ahb", "mod"; resets = <&ccu RST_BUS_NAND>; reset-names = "ahb"; + dmas = <&dma 5>; + dma-names = "rxtx"; pinctrl-names = "default"; pinctrl-0 = <&nand_pins &nand_cs0_pin &nand_rb0_pin>; status = "disabled";