diff mbox

[v2,4/9] ARM: STi: DT: STiH407: Add Device Tree node for the LPC

Message ID 1421927767-28889-5-git-send-email-lee.jones@linaro.org
State Superseded
Headers show

Commit Message

Lee Jones Jan. 22, 2015, 11:56 a.m. UTC
On current ST platforms the LPC controls a number of functions.  This
patch enables support for the LPC Watchdog and LPC RTC devices on LPC1
and LPC2 respectively.

Signed-off-by: David Paris <david.paris@st.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
 arch/arm/boot/dts/stih407-family.dtsi | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

Comments

Lee Jones Jan. 23, 2015, 9:43 a.m. UTC | #1
On Fri, 23 Jan 2015, David Paris wrote:

> Hi Lee,
> 
>     Just a minor remark/question,
> 
>     David
> 
> On 01/22/2015 12:56 PM, Lee Jones wrote:
> >On current ST platforms the LPC controls a number of functions.  This
> >patch enables support for the LPC Watchdog and LPC RTC devices on LPC1
> >and LPC2 respectively.
> >
> >Signed-off-by: David Paris <david.paris@st.com>
> >Signed-off-by: Lee Jones <lee.jones@linaro.org>
> >---
> >  arch/arm/boot/dts/stih407-family.dtsi | 20 ++++++++++++++++++++
> >  1 file changed, 20 insertions(+)
> >
> >diff --git a/arch/arm/boot/dts/stih407-family.dtsi b/arch/arm/boot/dts/stih407-family.dtsi
> >index 3e31d32..04448a7 100644
> >--- a/arch/arm/boot/dts/stih407-family.dtsi
> >+++ b/arch/arm/boot/dts/stih407-family.dtsi
> >@@ -7,6 +7,7 @@
> >   * publishhed by the Free Software Foundation.
> >   */
> >  #include "stih407-pinctrl.dtsi"
> >+#include <dt-bindings/mfd/st-lpc.h>
> >  #include <dt-bindings/reset-controller/stih407-resets.h>
> >  / {
> >  	#address-cells = <1>;
> >@@ -274,5 +275,24 @@
> >  			status = "disabled";
> >  		};
> >+
> >+		/* Watchdog and Real-Time Clock */
> >+		lpc@8787000 {
> >+			compatible = "st,stih407-lpc";
> >+			reg = <0x8787000 0x1000>;
> >+			interrupts = <GIC_SPI 129 IRQ_TYPE_EDGE_RISING>;
> In case of Watchdog, "interrupt" property is not used. So I think we
> can remove it ?

Sure thing.

> >+			clocks = <&clk_s_d3_flexgen CLK_LPC_0>;
> >+			timeout-sec = <120>;
> >+			st,syscfg = <&syscfg_core>;
> >+			st,lpc-mode = <ST_LPC_MODE_WDT>;
> >+		};
> >+
> >+		lpc@8788000 {
> >+			compatible = "st,stih407-lpc";
> >+			reg = <0x8788000 0x1000>;
> >+			interrupts = <GIC_SPI 130 IRQ_TYPE_EDGE_RISING>;
> >+			clocks = <&clk_s_d3_flexgen CLK_LPC_1>;
> >+			st,lpc-mode = <ST_LPC_MODE_RTC>;
> >+		};
> >  	};
> >  };
>
Lee Jones Feb. 18, 2015, 9:34 a.m. UTC | #2
On Fri, 23 Jan 2015, David Paris wrote:
> On 01/22/2015 12:56 PM, Lee Jones wrote:
> >On current ST platforms the LPC controls a number of functions.  This
> >patch enables support for the LPC Watchdog and LPC RTC devices on LPC1
> >and LPC2 respectively.
> >
> >Signed-off-by: David Paris <david.paris@st.com>
> >Signed-off-by: Lee Jones <lee.jones@linaro.org>
> >---
> >  arch/arm/boot/dts/stih407-family.dtsi | 20 ++++++++++++++++++++
> >  1 file changed, 20 insertions(+)
> >
> >diff --git a/arch/arm/boot/dts/stih407-family.dtsi b/arch/arm/boot/dts/stih407-family.dtsi
> >index 3e31d32..04448a7 100644
> >--- a/arch/arm/boot/dts/stih407-family.dtsi
> >+++ b/arch/arm/boot/dts/stih407-family.dtsi
> >@@ -7,6 +7,7 @@
> >   * publishhed by the Free Software Foundation.
> >   */
> >  #include "stih407-pinctrl.dtsi"
> >+#include <dt-bindings/mfd/st-lpc.h>
> >  #include <dt-bindings/reset-controller/stih407-resets.h>
> >  / {
> >  	#address-cells = <1>;
> >@@ -274,5 +275,24 @@
> >  			status = "disabled";
> >  		};
> >+
> >+		/* Watchdog and Real-Time Clock */
> >+		lpc@8787000 {
> >+			compatible = "st,stih407-lpc";
> >+			reg = <0x8787000 0x1000>;
> >+			interrupts = <GIC_SPI 129 IRQ_TYPE_EDGE_RISING>;
> In case of Watchdog, "interrupt" property is not used. So I think we
> can remove it ?

Although we don't use it, this still accurately describes the h/w, so
unless there are any severe objections, I think it can stay.

> >+			clocks = <&clk_s_d3_flexgen CLK_LPC_0>;
> >+			timeout-sec = <120>;
> >+			st,syscfg = <&syscfg_core>;
> >+			st,lpc-mode = <ST_LPC_MODE_WDT>;
> >+		};
> >+
> >+		lpc@8788000 {
> >+			compatible = "st,stih407-lpc";
> >+			reg = <0x8788000 0x1000>;
> >+			interrupts = <GIC_SPI 130 IRQ_TYPE_EDGE_RISING>;
> >+			clocks = <&clk_s_d3_flexgen CLK_LPC_1>;
> >+			st,lpc-mode = <ST_LPC_MODE_RTC>;
> >+		};
> >  	};
> >  };
>
diff mbox

Patch

diff --git a/arch/arm/boot/dts/stih407-family.dtsi b/arch/arm/boot/dts/stih407-family.dtsi
index 3e31d32..04448a7 100644
--- a/arch/arm/boot/dts/stih407-family.dtsi
+++ b/arch/arm/boot/dts/stih407-family.dtsi
@@ -7,6 +7,7 @@ 
  * publishhed by the Free Software Foundation.
  */
 #include "stih407-pinctrl.dtsi"
+#include <dt-bindings/mfd/st-lpc.h>
 #include <dt-bindings/reset-controller/stih407-resets.h>
 / {
 	#address-cells = <1>;
@@ -274,5 +275,24 @@ 
 
 			status = "disabled";
 		};
+
+		/* Watchdog and Real-Time Clock */
+		lpc@8787000 {
+			compatible = "st,stih407-lpc";
+			reg = <0x8787000 0x1000>;
+			interrupts = <GIC_SPI 129 IRQ_TYPE_EDGE_RISING>;
+			clocks = <&clk_s_d3_flexgen CLK_LPC_0>;
+			timeout-sec = <120>;
+			st,syscfg = <&syscfg_core>;
+			st,lpc-mode = <ST_LPC_MODE_WDT>;
+		};
+
+		lpc@8788000 {
+			compatible = "st,stih407-lpc";
+			reg = <0x8788000 0x1000>;
+			interrupts = <GIC_SPI 130 IRQ_TYPE_EDGE_RISING>;
+			clocks = <&clk_s_d3_flexgen CLK_LPC_1>;
+			st,lpc-mode = <ST_LPC_MODE_RTC>;
+		};
 	};
 };