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ARM: dts: at91: sama5d2: Add DMA bindings for the SPI and I2C flx0 functions

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Spare boards of duplicating the DMA bindings. Describe the flx0
DMA bindings in the SoC dtsi. Users that don't want to use DMA
for their flexcom functions have to overwrite the flexcom DMA
bindings in their board device tree.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20200514050301.147442-12-tudor.ambarus@microchip.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Tudor Ambarus
2020-05-14 05:03:14 +00:00
committed by Alexandre Belloni
parent 1a6508a2ed
commit 466fb89be5
3 changed files with 19 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm/boot/dts/at91-sama5d2_icp.dts
View File

@@ -105,6 +105,7 @@ &flx0 { /* mikrobus2 spi */
status = "okay";
spi2: spi@400 {
dmas = <0>, <0>;
cs-gpios = <&pioA PIN_PC0 GPIO_ACTIVE_LOW>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_mikrobus2_spi &pinctrl_ksz_spi_cs>;

1
arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts
View File

@@ -192,7 +192,6 @@ flx0: flexcom@f8034000 {
i2c2: i2c@600 {
dmas = <0>, <0>;
dma-names = "tx", "rx";
pinctrl-names = "default", "gpio";
pinctrl-0 = <&pinctrl_flx0_default>;
pinctrl-1 = <&pinctrl_flx0_gpio>;

18
arch/arm/boot/dts/sama5d2.dtsi
View File

@@ -661,6 +661,15 @@ spi2: spi@400 {
interrupts = <19 IRQ_TYPE_LEVEL_HIGH 7>;
clocks = <&pmc PMC_TYPE_PERIPHERAL 19>;
clock-names = "spi_clk";
dmas = <&dma0
(AT91_XDMAC_DT_MEM_IF(0) |
AT91_XDMAC_DT_PER_IF(1) |
AT91_XDMAC_DT_PERID(11))>,
<&dma0
(AT91_XDMAC_DT_MEM_IF(0) |
AT91_XDMAC_DT_PER_IF(1) |
AT91_XDMAC_DT_PERID(12))>;
dma-names = "tx", "rx";
atmel,fifo-size = <16>;
status = "disabled";
};
@@ -672,6 +681,15 @@ i2c2: i2c@600 {
#address-cells = <1>;
#size-cells = <0>;
clocks = <&pmc PMC_TYPE_PERIPHERAL 19>;
dmas = <&dma0
(AT91_XDMAC_DT_MEM_IF(0) |
AT91_XDMAC_DT_PER_IF(1) |
AT91_XDMAC_DT_PERID(11))>,
<&dma0
(AT91_XDMAC_DT_MEM_IF(0) |
AT91_XDMAC_DT_PER_IF(1) |
AT91_XDMAC_DT_PERID(12))>;
dma-names = "tx", "rx";
atmel,fifo-size = <16>;
status = "disabled";
};