From: Raveendra Padasalagi <raveendra.padasalagi@broadcom.com>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Russell King <linux@arm.linux.org.uk>,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-input@vger.kernel.org
Cc: Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Kumar Gala <galak@codeaurora.org>,
Jonathan Richardson <jonathar@broadcom.com>,
Jon Mason <jonmason@broadcom.com>,
Florian Fainelli <f.fainelli@gmail.com>,
Ray Jui <rjui@broadcom.com>,
Scott Branden <sbranden@broadcom.com>,
linux-kernel@vger.kernel.org,
bcm-kernel-feedback-list@broadcom.com,
Raveendra Padasalagi <raveendra.padasalagi@broadcom.com>
Subject: [PATCH 3/3] ARM: dts: use syscon in cygnus touchscreen dt node
Date: Tue, 9 Feb 2016 14:27:57 +0530 [thread overview]
Message-ID: <1455008277-8312-4-git-send-email-raveendra.padasalagi@broadcom.com> (raw)
In-Reply-To: <1455008277-8312-1-git-send-email-raveendra.padasalagi@broadcom.com>
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(-)
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>;
--
1.9.1
WARNING: multiple messages have this Message-ID (diff)
From: Raveendra Padasalagi <raveendra.padasalagi@broadcom.com>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Russell King <linux@arm.linux.org.uk>,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-input@vger.kernel.org
Cc: Mark Rutland <mark.rutland@arm.com>,
Raveendra Padasalagi <raveendra.padasalagi@broadcom.com>,
Florian Fainelli <f.fainelli@gmail.com>,
Scott Branden <sbranden@broadcom.com>,
Pawel Moll <pawel.moll@arm.com>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Jon Mason <jonmason@broadcom.com>, Ray Jui <rjui@broadcom.com>,
linux-kernel@vger.kernel.org,
Jonathan Richardson <jonathar@broadcom.com>,
Rob Herring <robh+dt@kernel.org>,
bcm-kernel-feedback-list@broadcom.com,
Kumar Gala <galak@codeaurora.org>
Subject: [PATCH 3/3] ARM: dts: use syscon in cygnus touchscreen dt node
Date: Tue, 9 Feb 2016 14:27:57 +0530 [thread overview]
Message-ID: <1455008277-8312-4-git-send-email-raveendra.padasalagi@broadcom.com> (raw)
In-Reply-To: <1455008277-8312-1-git-send-email-raveendra.padasalagi@broadcom.com>
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(-)
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>;
--
1.9.1
WARNING: multiple messages have this Message-ID (diff)
From: raveendra.padasalagi@broadcom.com (Raveendra Padasalagi)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/3] ARM: dts: use syscon in cygnus touchscreen dt node
Date: Tue, 9 Feb 2016 14:27:57 +0530 [thread overview]
Message-ID: <1455008277-8312-4-git-send-email-raveendra.padasalagi@broadcom.com> (raw)
In-Reply-To: <1455008277-8312-1-git-send-email-raveendra.padasalagi@broadcom.com>
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(-)
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 = <GIC_SPI 164 IRQ_TYPE_LEVEL_HIGH>;
--
1.9.1
next prev parent reply other threads:[~2016-02-09 9:06 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-09 8:57 [PATCH 0/3] Syscon support for iProc touchscreen driver Raveendra Padasalagi
2016-02-09 8:57 ` Raveendra Padasalagi
2016-02-09 8:57 ` Raveendra Padasalagi
2016-02-09 8:57 ` [PATCH 1/3] input: cygnus-update touchscreen dt node document Raveendra Padasalagi
2016-02-09 8:57 ` Raveendra Padasalagi
2016-02-09 8:57 ` Raveendra Padasalagi
2016-02-09 11:04 ` Arnd Bergmann
2016-02-09 11:04 ` Arnd Bergmann
2016-02-09 16:55 ` Raveendra Padasalagi
2016-02-09 16:55 ` Raveendra Padasalagi
2016-02-09 17:43 ` Dmitry Torokhov
2016-02-09 17:43 ` Dmitry Torokhov
2016-02-09 17:43 ` Dmitry Torokhov
2016-02-10 4:54 ` Raveendra Padasalagi
2016-02-10 4:54 ` Raveendra Padasalagi
2016-02-12 15:04 ` Rob Herring
2016-02-12 15:04 ` Rob Herring
2016-02-16 4:24 ` Raveendra Padasalagi
2016-02-16 4:24 ` Raveendra Padasalagi
2016-02-09 8:57 ` [PATCH 2/3] input: syscon support in bcm_iproc_tsc driver Raveendra Padasalagi
2016-02-09 8:57 ` Raveendra Padasalagi
2016-02-09 8:57 ` Raveendra Padasalagi
2016-02-09 8:57 ` Raveendra Padasalagi [this message]
2016-02-09 8:57 ` [PATCH 3/3] ARM: dts: use syscon in cygnus touchscreen dt node Raveendra Padasalagi
2016-02-09 8:57 ` Raveendra Padasalagi
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