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ARM: dts: at91: sama5d2: Add DMA bindings for the SPI and UART flx4 functions

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Spare boards of duplicating the DMA bindings. Describe the flx4
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/20200514050301.147442-9-tudor.ambarus@microchip.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Tudor Ambarus 2020-05-14 05:03:12 +00:00 committed by Alexandre Belloni
parent 4b09803327
commit ddcdaeb882
2 changed files with 20 additions and 0 deletions
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2
arch/arm/boot/dts/at91-sama5d27_som1_ek.dts
View File

@ -190,12 +190,14 @@
status = "okay";
uart9: serial@200 {
dmas = <0>, <0>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_flx4_default>;
status = "disabled"; /* Conflict with spi6 and i2c6. */
};
spi6: spi@400 {
dmas = <0>, <0>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_mikrobus_spi &pinctrl_mikrobus1_spi_cs &pinctrl_mikrobus2_spi_cs>;
status = "okay"; /* Conflict with uart5 and i2c6. */

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

@ -939,6 +939,15 @@
interrupts = <23 IRQ_TYPE_LEVEL_HIGH 7>;
clocks = <&pmc PMC_TYPE_PERIPHERAL 23>;
clock-names = "usart";
dmas = <&dma0
(AT91_XDMAC_DT_MEM_IF(0) |
AT91_XDMAC_DT_PER_IF(1) |
AT91_XDMAC_DT_PERID(19))>,
<&dma0
(AT91_XDMAC_DT_MEM_IF(0) |
AT91_XDMAC_DT_PER_IF(1) |
AT91_XDMAC_DT_PERID(20))>;
dma-names = "tx", "rx";
atmel,fifo-size = <32>;
status = "disabled";
};
@ -949,6 +958,15 @@
interrupts = <23 IRQ_TYPE_LEVEL_HIGH 7>;
clocks = <&pmc PMC_TYPE_PERIPHERAL 23>;
clock-names = "spi_clk";
dmas = <&dma0
(AT91_XDMAC_DT_MEM_IF(0) |
AT91_XDMAC_DT_PER_IF(1) |
AT91_XDMAC_DT_PERID(19))>,
<&dma0
(AT91_XDMAC_DT_MEM_IF(0) |
AT91_XDMAC_DT_PER_IF(1) |
AT91_XDMAC_DT_PERID(20))>;
dma-names = "tx", "rx";
atmel,fifo-size = <16>;
status = "disabled";
};