diff options
| author | Raveendra Padasalagi <raveendra.padasalagi@broadcom.com> | 2016-04-06 20:26:27 +0300 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2016-04-07 02:11:56 +0300 |
| commit | 74813cebd678dd471b4fcd7d3019aecab9dbcedd (patch) | |
| tree | 64d40e8ef5b60959cadd25f13368728b2a9a912e /arch/arm | |
| parent | 20aa787e453faec948ad75ebaa1535dbd5adb271 (diff) | |
| download | linux-74813cebd678dd471b4fcd7d3019aecab9dbcedd.tar.xz | |
Input: bcm_iproc_tsc - use syscon to access shared registers
In Cygnus SOC touch screen controller registers are shared with ADC and
flex timer. Using readl/writel could lead to race condition. So touch
screen driver is enhanced to support register access using syscon framework
API's to take care of mutually exclusive access.
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>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/boot/dts/bcm-cygnus.dtsi | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/arch/arm/boot/dts/bcm-cygnus.dtsi b/arch/arm/boot/dts/bcm-cygnus.dtsi index 3878793364f0..b42fe5596b94 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>; }; - touchscreen: tsc@180a6000 { + ts_adc_syscon: ts_adc_syscon@180a6000 { + compatible = "brcm,iproc-ts-adc-syscon", "syscon"; + reg = <0x180a6000 0xc30>; + }; + + touchscreen: touchscreen@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>; |