linux-kernel - [PATCH 09/16] ARM: dts: at91: sama5d2: Add DMA bindings for the flx3 SPI function

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Message-ID: <20200514050301.147442-10-tudor.ambarus@microchip.com>
Date:   Thu, 14 May 2020 05:03:12 +0000
From:   <Tudor.Ambarus@...rochip.com>
To:     <alexandre.belloni@...tlin.com>, <Ludovic.Desroches@...rochip.com>,
        <Nicolas.Ferre@...rochip.com>
CC:     <robh+dt@...nel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <Codrin.Ciubotariu@...rochip.com>,
        <Tudor.Ambarus@...rochip.com>
Subject: [PATCH 09/16] ARM: dts: at91: sama5d2: Add DMA bindings for the flx3
 SPI function

From: Tudor Ambarus <tudor.ambarus@...rochip.com>

Spare boards of duplicating the DMA bindings. Describe the flx3
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@...rochip.com>
---
 arch/arm/boot/dts/at91-sama5d27_som1_ek.dts | 1 +
 arch/arm/boot/dts/at91-sama5d2_icp.dts      | 1 +
 arch/arm/boot/dts/sama5d2.dtsi              | 9 +++++++++
 3 files changed, 11 insertions(+)

diff --git a/arch/arm/boot/dts/at91-sama5d27_som1_ek.dts b/arch/arm/boot/dts/at91-sama5d27_som1_ek.dts
index 6ad66d034305..1aa8b79d618b 100644
--- a/arch/arm/boot/dts/at91-sama5d27_som1_ek.dts
+++ b/arch/arm/boot/dts/at91-sama5d27_som1_ek.dts
@@ -179,6 +179,7 @@
 				};
 
 				spi5: spi@400 {
+					dmas = <0>, <0>;
 					pinctrl-names = "default";
 					pinctrl-0 = <&pinctrl_flx3_default>;
 					status = "disabled"; /* Conflict with isc. */
diff --git a/arch/arm/boot/dts/at91-sama5d2_icp.dts b/arch/arm/boot/dts/at91-sama5d2_icp.dts
index 4a01ab8e7e70..559d8ae93af9 100644
--- a/arch/arm/boot/dts/at91-sama5d2_icp.dts
+++ b/arch/arm/boot/dts/at91-sama5d2_icp.dts
@@ -167,6 +167,7 @@
 	status = "okay";
 
 	spi5: spi@400 {
+		dmas = <0>, <0>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_mikrobus1_spi &pinctrl_mikrobus1_spi_cs>;
 		status = "okay";
diff --git a/arch/arm/boot/dts/sama5d2.dtsi b/arch/arm/boot/dts/sama5d2.dtsi
index 66aa8d6502d3..5a0162915ae7 100644
--- a/arch/arm/boot/dts/sama5d2.dtsi
+++ b/arch/arm/boot/dts/sama5d2.dtsi
@@ -919,6 +919,15 @@
 					interrupts = <22 IRQ_TYPE_LEVEL_HIGH 7>;
 					clocks = <&pmc PMC_TYPE_PERIPHERAL 22>;
 					clock-names = "spi_clk";
+					dmas = <&dma0
+						(AT91_XDMAC_DT_MEM_IF(0) |
+						 AT91_XDMAC_DT_PER_IF(1) |
+						 AT91_XDMAC_DT_PERID(17))>,
+					       <&dma0
+						(AT91_XDMAC_DT_MEM_IF(0) |
+						 AT91_XDMAC_DT_PER_IF(1) |
+						 AT91_XDMAC_DT_PERID(18))>;
+					dma-names = "tx", "rx";
 					atmel,fifo-size = <16>;
 					status = "disabled";
 				};
-- 
2.23.0