From mboxrd@z Thu Jan 1 00:00:00 1970 From: raveendra.padasalagi@broadcom.com (Raveendra Padasalagi) Date: Tue, 9 Feb 2016 14:27:57 +0530 Subject: [PATCH 3/3] ARM: dts: use syscon in cygnus touchscreen dt node In-Reply-To: <1455008277-8312-1-git-send-email-raveendra.padasalagi@broadcom.com> References: <1455008277-8312-1-git-send-email-raveendra.padasalagi@broadcom.com> Message-ID: <1455008277-8312-4-git-send-email-raveendra.padasalagi@broadcom.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 Reviewed-by: Ray Jui Reviewed-by: Scott Branden --- arch/arm/boot/dts/bcm-cygnus.dtsi | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) 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 at 0x180a6000 { + compatible = "syscon"; + reg = <0x180a6000 0xc30>; + }; + touchscreen: tsc at 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 = ; -- 1.9.1