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authorAlexander Kochetkov <al.kochet@gmail.com>2017-03-21 18:13:47 +0300
committerHeiko Stuebner <heiko@sntech.de>2017-03-22 18:49:39 +0300
commit94bbdd77247d8c16eed5f55dddcf1cbc38d06cc4 (patch)
treed53fbbd9b3bcecfb2d1b463cbff85a6947feec06 /arch/arm/boot/dts/rk3xxx.dtsi
parent2e1aa605faddb810b2bd5dac7ed418d898268e40 (diff)
downloadlinux-94bbdd77247d8c16eed5f55dddcf1cbc38d06cc4.tar.xz
ARM: dts: rockchip: setup DMA-channels for mmc0 and emmc for rk3188
This commit enable DMA-based transfers for SD/eMMC card adapters and reduce number of interrupts produced by SD-card/eMMC-card adapters. Sometimes interrupts from SD-card/eMMC-card adapters running in PIO mode blocks execution of hrtimers and I2S DMA callbacks for a long periods (100 ms or more). Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com> [moved dma properties to rk3xxx.dtsi and added sdio dma] Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Diffstat (limited to 'arch/arm/boot/dts/rk3xxx.dtsi')
-rw-r--r--arch/arm/boot/dts/rk3xxx.dtsi6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/rk3xxx.dtsi b/arch/arm/boot/dts/rk3xxx.dtsi
index c5b8592af73c..4aa6f60d6a22 100644
--- a/arch/arm/boot/dts/rk3xxx.dtsi
+++ b/arch/arm/boot/dts/rk3xxx.dtsi
@@ -223,6 +223,8 @@
interrupts = <GIC_SPI 23 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cru HCLK_SDMMC>, <&cru SCLK_SDMMC>;
clock-names = "biu", "ciu";
+ dmas = <&dmac2 1>;
+ dma-names = "rx-tx";
fifo-depth = <256>;
resets = <&cru SRST_SDMMC>;
reset-names = "reset";
@@ -235,6 +237,8 @@
interrupts = <GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cru HCLK_SDIO>, <&cru SCLK_SDIO>;
clock-names = "biu", "ciu";
+ dmas = <&dmac2 3>;
+ dma-names = "rx-tx";
fifo-depth = <256>;
resets = <&cru SRST_SDIO>;
reset-names = "reset";
@@ -247,6 +251,8 @@
interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cru HCLK_EMMC>, <&cru SCLK_EMMC>;
clock-names = "biu", "ciu";
+ dmas = <&dmac2 4>;
+ dma-names = "rx-tx";
fifo-depth = <256>;
resets = <&cru SRST_EMMC>;
reset-names = "reset";