From mboxrd@z Thu Jan 1 00:00:00 1970 From: raveendra.padasalagi@broadcom.com (Raveendra Padasalagi) Date: Tue, 9 Feb 2016 14:27:55 +0530 Subject: [PATCH 1/3] input: cygnus-update touchscreen dt node document 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: <1455008277-8312-2-git-send-email-raveendra.padasalagi@broadcom.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Touch screen driver is modified to use syscon framework based register read/write API's. So added syscon node and related changes in dt file.Updating the device tree documentation file to reflect the changes. Signed-off-by: Raveendra Padasalagi Reviewed-by: Ray Jui Reviewed-by: Scott Branden --- .../input/touchscreen/brcm,iproc-touchscreen.txt | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/input/touchscreen/brcm,iproc-touchscreen.txt b/Documentation/devicetree/bindings/input/touchscreen/brcm,iproc-touchscreen.txt index 34e3382..67599ae 100644 --- a/Documentation/devicetree/bindings/input/touchscreen/brcm,iproc-touchscreen.txt +++ b/Documentation/devicetree/bindings/input/touchscreen/brcm,iproc-touchscreen.txt @@ -2,8 +2,16 @@ Required properties: - compatible: must be "brcm,iproc-touchscreen" -- reg: physical base address of the controller and length of memory mapped - region. + +One of the below 2 property is mandatory. +- ts_syscon: handler of syscon node defining physical base address + of the controller and length of memory mapped region. + If this property is selected please make sure MFD_SYSCON config + is enabled in the defconfig file. +or +- reg: physical base address of the controller and length of memory + mapped region. + - clocks: The clock provided by the SOC to driver the tsc - clock-name: name for the clock - interrupts: The touchscreen controller's interrupt @@ -54,12 +62,16 @@ Optional properties: - touchscreen-inverted-y: Y axis is inverted (boolean) Example: + ts_adc_syscon: ts_adc_syscon at 0x180a6000 { + compatible = "syscon"; + reg = <0x180a6000 0xc30>; + }; touchscreen: tsc at 0x180A6000 { compatible = "brcm,iproc-touchscreen"; #address-cells = <1>; #size-cells = <1>; - reg = <0x180A6000 0x40>; + syscon = <&ts_adc_syscon>; clocks = <&adc_clk>; clock-names = "tsc_clk"; interrupts = ; -- 1.9.1