arm: dts: omap: add reg-shift to serial device tree node

With the commit 'c7b9686d ("ns16550: unify serial_omap")' all
TI platforms are broken with DM/DT boot as ns16550 driver expects
reg-shift from DT which is not populated for TI platforms.
Earlier it worked as it was hard coded to 2 in serial-omap
driver. So adding the reg-shift to serial nodes for dra7, am4372
and am33xx dtsi files. Tested this patch on am437x-sk-evm,
am437x-gp-evm, am335x-boneblack, dra74x-evm and dra72x-evm.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Thomas Chou <thomas@wytron.com.tw>

arch/arm/dts/am33xx.dtsi

@@ -214,6 +214,7 @@
 			ti,hwmods = "uart1";
 			clock-frequency = <48000000>;
 			reg = <0x44e09000 0x2000>;
+			reg-shift = <2>;
 			interrupts = <72>;
 			status = "disabled";
 			dmas = <&edma 26>, <&edma 27>;
@@ -225,6 +226,7 @@
 			ti,hwmods = "uart2";
 			clock-frequency = <48000000>;
 			reg = <0x48022000 0x2000>;
+			reg-shift = <2>;
 			interrupts = <73>;
 			status = "disabled";
 			dmas = <&edma 28>, <&edma 29>;
@@ -236,6 +238,7 @@
 			ti,hwmods = "uart3";
 			clock-frequency = <48000000>;
 			reg = <0x48024000 0x2000>;
+			reg-shift = <2>;
 			interrupts = <74>;
 			status = "disabled";
 			dmas = <&edma 30>, <&edma 31>;
@@ -247,6 +250,7 @@
 			ti,hwmods = "uart4";
 			clock-frequency = <48000000>;
 			reg = <0x481a6000 0x2000>;
+			reg-shift = <2>;
 			interrupts = <44>;
 			status = "disabled";
 		};
@@ -256,6 +260,7 @@
 			ti,hwmods = "uart5";
 			clock-frequency = <48000000>;
 			reg = <0x481a8000 0x2000>;
+			reg-shift = <2>;
 			interrupts = <45>;
 			status = "disabled";
 		};
@@ -265,6 +270,7 @@
 			ti,hwmods = "uart6";
 			clock-frequency = <48000000>;
 			reg = <0x481aa000 0x2000>;
+			reg-shift = <2>;
 			interrupts = <46>;
 			status = "disabled";
 		};

arch/arm/dts/am4372.dtsi

@@ -152,6 +152,7 @@
 		uart0: serial@44e09000 {
 			compatible = "ti,am4372-uart","ti,omap2-uart";
 			reg = <0x44e09000 0x2000>;
+			reg-shift = <2>;
 			interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart1";
 		};
@@ -159,6 +160,7 @@
 		uart1: serial@48022000 {
 			compatible = "ti,am4372-uart","ti,omap2-uart";
 			reg = <0x48022000 0x2000>;
+			reg-shift = <2>;
 			interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart2";
 			status = "disabled";
@@ -167,6 +169,7 @@
 		uart2: serial@48024000 {
 			compatible = "ti,am4372-uart","ti,omap2-uart";
 			reg = <0x48024000 0x2000>;
+			reg-shift = <2>;
 			interrupts = <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart3";
 			status = "disabled";
@@ -175,6 +178,7 @@
 		uart3: serial@481a6000 {
 			compatible = "ti,am4372-uart","ti,omap2-uart";
 			reg = <0x481a6000 0x2000>;
+			reg-shift = <2>;
 			interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart4";
 			status = "disabled";
@@ -183,6 +187,7 @@
 		uart4: serial@481a8000 {
 			compatible = "ti,am4372-uart","ti,omap2-uart";
 			reg = <0x481a8000 0x2000>;
+			reg-shift = <2>;
 			interrupts = <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart5";
 			status = "disabled";
@@ -191,6 +196,7 @@
 		uart5: serial@481aa000 {
 			compatible = "ti,am4372-uart","ti,omap2-uart";
 			reg = <0x481aa000 0x2000>;
+			reg-shift = <2>;
 			interrupts = <GIC_SPI 46 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart6";
 			status = "disabled";

arch/arm/dts/dra7.dtsi

@@ -399,6 +399,7 @@
 		uart1: serial@4806a000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x4806a000 0x100>;
+			reg-shift = <2>;
 			interrupts-extended = <&crossbar_mpu GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart1";
 			clock-frequency = <48000000>;
@@ -410,6 +411,7 @@
 		uart2: serial@4806c000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x4806c000 0x100>;
+			reg-shift = <2>;
 			interrupts = <GIC_SPI 68 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart2";
 			clock-frequency = <48000000>;
@@ -421,6 +423,7 @@
 		uart3: serial@48020000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48020000 0x100>;
+			reg-shift = <2>;
 			interrupts = <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart3";
 			clock-frequency = <48000000>;
@@ -432,6 +435,7 @@
 		uart4: serial@4806e000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x4806e000 0x100>;
+			reg-shift = <2>;
 			interrupts = <GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart4";
 			clock-frequency = <48000000>;
@@ -443,6 +447,7 @@
 		uart5: serial@48066000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48066000 0x100>;
+			reg-shift = <2>;
 			interrupts = <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart5";
 			clock-frequency = <48000000>;
@@ -454,6 +459,7 @@
 		uart6: serial@48068000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48068000 0x100>;
+			reg-shift = <2>;
 			interrupts = <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart6";
 			clock-frequency = <48000000>;
@@ -465,6 +471,7 @@
 		uart7: serial@48420000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48420000 0x100>;
+			reg-shift = <2>;
 			interrupts = <GIC_SPI 218 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart7";
 			clock-frequency = <48000000>;
@@ -474,6 +481,7 @@
 		uart8: serial@48422000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48422000 0x100>;
+			reg-shift = <2>;
 			interrupts = <GIC_SPI 219 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart8";
 			clock-frequency = <48000000>;
@@ -483,6 +491,7 @@
 		uart9: serial@48424000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48424000 0x100>;
+			reg-shift = <2>;
 			interrupts = <GIC_SPI 220 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart9";
 			clock-frequency = <48000000>;
@@ -492,6 +501,7 @@
 		uart10: serial@4ae2b000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x4ae2b000 0x100>;
+			reg-shift = <2>;
 			interrupts = <GIC_SPI 221 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart10";
 			clock-frequency = <48000000>;