UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

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>
This commit is contained in:
Alexander Kochetkov 2017-03-21 18:13:47 +03:00 committed by Heiko Stuebner
parent 2e1aa605fa
commit 94bbdd7724
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/arm/boot/dts/rk3xxx.dtsi
View File

@ -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";