4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sean Nyekjaer <sean.nyekjaer@xxxxxxxxx>
commit df07101e1c4a29e820df02f9989a066988b160e6 upstream.
According to the reference manual the shp_2_mcu / mcu_2_shp
scripts must be used for devices connected through the SPBA.
This fixes an issue we saw with DMA transfers.
Sometimes the SPI controller RX FIFO was not empty after a DMA
transfer and the driver got stuck in the next PIO transfer when
it read one word more than expected.
commit dd4b487b32a35 ("ARM: dts: imx6: Use correct SDMA script
for SPI cores") is fixing the same issue but only for SPI1 - 4.
Fixes: 677940258dd8e ("ARM: dts: imx6q: enable dma for ecspi5")
Signed-off-by: Sean Nyekjaer <sean.nyekjaer@xxxxxxxxx>
Reviewed-by: Fabio Estevam <fabio.estevam@xxxxxxx>
Signed-off-by: Shawn Guo <shawnguo@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm/boot/dts/imx6q.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm/boot/dts/imx6q.dtsi
+++ b/arch/arm/boot/dts/imx6q.dtsi
@@ -95,7 +95,7 @@
clocks = <&clks IMX6Q_CLK_ECSPI5>,
<&clks IMX6Q_CLK_ECSPI5>;
clock-names = "ipg", "per";
- dmas = <&sdma 11 7 1>, <&sdma 12 7 2>;
+ dmas = <&sdma 11 8 1>, <&sdma 12 8 2>;
dma-names = "rx", "tx";
status = "disabled";
};
