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| author | Alexander Kochetkov <al.kochet@gmail.com> | 2017-03-21 18:13:47 +0300 |
|---|---|---|
| committer | Heiko Stuebner <heiko@sntech.de> | 2017-03-22 18:49:39 +0300 |
| commit | 94bbdd77247d8c16eed5f55dddcf1cbc38d06cc4 (patch) | |
| tree | d53fbbd9b3bcecfb2d1b463cbff85a6947feec06 /arch/arm/boot/dts/rk3xxx.dtsi | |
| parent | 2e1aa605faddb810b2bd5dac7ed418d898268e40 (diff) | |
| download | linux-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.dtsi | 6 |
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"; |