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

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>

diff --git a/arch/arm/boot/dts/at91-sama5d27_som1_ek.dts b/arch/arm/boot/dts/at91-sama5d27_som1_ek.dts
index a0deff1..6ad66d0 100644 (file)
--- a/arch/arm/boot/dts/at91-sama5d27_som1_ek.dts
+++ b/arch/arm/boot/dts/at91-sama5d27_som1_ek.dts
@@ -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. */

diff --git a/arch/arm/boot/dts/sama5d2.dtsi b/arch/arm/boot/dts/sama5d2.dtsi
index dde969a..66aa8d6 100644 (file)
--- a/arch/arm/boot/dts/sama5d2.dtsi
+++ b/arch/arm/boot/dts/sama5d2.dtsi
@@ -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";
                                };