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 a0deff15fb9ab26cd87cd23cce6e8530ce13f694..6ad66d034305be315cfbbf3c3e93371322167be5 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 dde969a140b48a2b964452622a76a00bff36574e..66aa8d6502d3212f1e516a7fe624bf9bfc3df641 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";
                                };