linux-kernel - [PATCH 11/16] ARM: dts: at91: sama5d2: Add DMA bindings for the SPI and I2C flx0 functions

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Message-ID: <20200514050301.147442-12-tudor.ambarus@microchip.com>
Date:   Thu, 14 May 2020 05:03:14 +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 11/16] ARM: dts: at91: sama5d2: Add DMA bindings for the SPI
 and I2C flx0 functions

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

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@...rochip.com>
---
 arch/arm/boot/dts/at91-sama5d2_icp.dts    |  1 +
 arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts |  1 -
 arch/arm/boot/dts/sama5d2.dtsi            | 18 ++++++++++++++++++
 3 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/at91-sama5d2_icp.dts b/arch/arm/boot/dts/at91-sama5d2_icp.dts
index 559d8ae93af9..8d19925fc09e 100644
--- a/arch/arm/boot/dts/at91-sama5d2_icp.dts
+++ b/arch/arm/boot/dts/at91-sama5d2_icp.dts
@@ -105,6 +105,7 @@
 	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>;
diff --git a/arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts b/arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts
index 8ad3a9c6c536..0e0341c83aa5 100644
--- a/arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts
+++ b/arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts
@@ -192,7 +192,6 @@
 
 				i2c2: i2c@600 {
 					dmas = <0>, <0>;
-					dma-names = "tx", "rx";
 					pinctrl-names = "default", "gpio";
 					pinctrl-0 = <&pinctrl_flx0_default>;
 					pinctrl-1 = <&pinctrl_flx0_gpio>;
diff --git a/arch/arm/boot/dts/sama5d2.dtsi b/arch/arm/boot/dts/sama5d2.dtsi
index 855846c74a32..5bba8024f485 100644
--- a/arch/arm/boot/dts/sama5d2.dtsi
+++ b/arch/arm/boot/dts/sama5d2.dtsi
@@ -661,6 +661,15 @@
 					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 @@
 					#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";
 				};
-- 
2.23.0