[PATCH] ARM: dts: Add dra7 iodelay configuration and use it for MMC

[Tony Lindgren <tony@atomide.com>]

Add dra7 iodelay configuration and use it for MMC.

Signed-off-by: Tony Lindgren <tony@atomide.com>
---
 arch/arm/boot/dts/am57xx-beagle-x15-common.dtsi | 21 ++++++++++++++++++++-
 arch/arm/boot/dts/dra7.dtsi                     |  8 ++++++++
 include/dt-bindings/pinctrl/dra.h               |  4 ++++
 3 files changed, 32 insertions(+), 1 deletion(-)
---

And ere are the related dts changes.

diff --git a/arch/arm/boot/dts/am57xx-beagle-x15-common.dtsi b/arch/arm/boot/dts/am57xx-beagle-x15-common.dtsi
--- a/arch/arm/boot/dts/am57xx-beagle-x15-common.dtsi
+++ b/arch/arm/boot/dts/am57xx-beagle-x15-common.dtsi
@@ -190,6 +190,25 @@
 		>;
 	};
 };
+
+&dra7_iodelay_core
+{
+	mmc2_iodelay_3v3_conf: mmc2_iodelay_3v3_conf {
+		pinctrl-pin-array = <
+			0x18c A_DELAY_PS(0) G_DELAY_PS(120)	/* CFG_GPMC_A19_IN */
+			0x1a4 A_DELAY_PS(265) G_DELAY_PS(360)	/* CFG_GPMC_A20_IN */
+			0x1b0 A_DELAY_PS(0) G_DELAY_PS(120)	/* CFG_GPMC_A21_IN */
+			0x1bc A_DELAY_PS(0) G_DELAY_PS(120)	/* CFG_GPMC_A22_IN */
+			0x1c8 A_DELAY_PS(287) G_DELAY_PS(420)	/* CFG_GPMC_A23_IN */
+			0x1d4 A_DELAY_PS(144) G_DELAY_PS(240)	/* CFG_GPMC_A24_IN */
+			0x1e0 A_DELAY_PS(0) G_DELAY_PS(0)	/* CFG_GPMC_A25_IN */
+			0x1ec A_DELAY_PS(120) G_DELAY_PS(0)	/* CFG_GPMC_A26_IN */
+			0x1f8 A_DELAY_PS(120) G_DELAY_PS(180)	/* CFG_GPMC_A27_IN */
+			0x360 A_DELAY_PS(0) G_DELAY_PS(0)	/* CFG_GPMC_CS1_IN */
+		>;
+	};
+};
+
 &i2c1 {
 	status = "okay";
 	clock-frequency = <400000>;
@@ -452,7 +471,7 @@
 	status = "okay";
 
 	pinctrl-names = "default";
-	pinctrl-0 = <&mmc2_pins_default>;
+	pinctrl-0 = <&mmc2_pins_default &mmc2_iodelay_3v3_conf>;
 
 	vmmc-supply = <&vdd_3v3>;
 	bus-width = <8>;
diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi
--- a/arch/arm/boot/dts/dra7.dtsi
+++ b/arch/arm/boot/dts/dra7.dtsi
@@ -401,6 +401,14 @@
 			reg = <0x40d00000 0x100>;
 		};
 
+		dra7_iodelay_core: padconf@4844a000 {
+			compatible = "ti,dra7-iodelay";
+			reg = <0x4844a000 0x0d1c>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			#pinctrl-cells = <2>;
+		};
+
 		sdma: dma-controller@4a056000 {
 			compatible = "ti,omap4430-sdma";
 			reg = <0x4a056000 0x1000>;
diff --git a/include/dt-bindings/pinctrl/dra.h b/include/dt-bindings/pinctrl/dra.h
--- a/include/dt-bindings/pinctrl/dra.h
+++ b/include/dt-bindings/pinctrl/dra.h
@@ -73,5 +73,9 @@
  */
 #define DRA7XX_CORE_IOPAD(pa, val)	(((pa) & 0xffff) - 0x3400) (val)
 
+/* DRA7 IODELAY configuration parameters */
+#define A_DELAY_PS(val)		((val) & 0xffff)
+#define G_DELAY_PS(val)		((val) & 0xffff)
+
 #endif
 
-- 
2.11.0