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[3/3] ARM: dts: use syscon in cygnus touchscreen dt node

Message ID 1455008277-8312-4-git-send-email-raveendra.padasalagi@broadcom.com (mailing list archive)
State New, archived
Headers show

Commit Message

Raveendra Padasalagi Feb. 9, 2016, 8:57 a.m. UTC 
In cygnus touch screen controller registers are shared with ADC
and flex timer. Using readl/writel could lead to race condition.
In such cases we need to support register access using syscon
framework based API's. So Added dt changes to use syscon.

Signed-off-by: Raveendra Padasalagi <raveendra.padasalagi@broadcom.com>
Reviewed-by: Ray Jui <ray.jui@broadcom.com>
Reviewed-by: Scott Branden <scott.branden@broadcom.com>
---
 arch/arm/boot/dts/bcm-cygnus.dtsi | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)
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Patch

diff --git a/arch/arm/boot/dts/bcm-cygnus.dtsi b/arch/arm/boot/dts/bcm-cygnus.dtsi
index 3878793..9190224 100644
--- a/arch/arm/boot/dts/bcm-cygnus.dtsi
+++ b/arch/arm/boot/dts/bcm-cygnus.dtsi
@@ -351,9 +351,16 @@ 
 					<&pinctrl 142 10 1>;
 		};
 
+		ts_adc_syscon: ts_adc_syscon@0x180a6000 {
+			compatible = "syscon";
+			reg = <0x180a6000 0xc30>;
+		};
+
 		touchscreen: tsc@180a6000 {
 			compatible = "brcm,iproc-touchscreen";
-			reg = <0x180a6000 0x40>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ts_syscon = <&ts_adc_syscon>;
 			clocks = <&asiu_clks BCM_CYGNUS_ASIU_ADC_CLK>;
 			clock-names = "tsc_clk";
 			interrupts = <GIC_SPI 164 IRQ_TYPE_LEVEL_HIGH>;