Re: [PATCH v4 7/9] ARM: dts: Add the support for exynos busfreq on Exynos3250-based Rinato/Monk board

Re: [PATCH v4 7/9] ARM: dts: Add the support for exynos busfreq on Exynos3250-based Rinato/Monk board

[MyungJoo Ham]

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>   
>  This patch adds the Exynos3250 memory-bus node which includes the regulator
> and devfreq-event phandle. The devfreq-event phandle is used for the
> governor of devfreq device and provide the current usage state of
> MIF (Memory Interface) / INT (Internal) memory bus group.
> 
> Cc: Kukjin Kim <kgene@kernel.org>
> Cc: Myungjoo Ham <myungjoo.ham@samsung.com>
> Cc: Kyungmin Park <kyungmin.park@samsung.com>
> Cc: Youngjun Cho <yj44.cho@samsung.com>
> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
> Acked-by: Kyungmin Park <kyungmin.park@samsung.com>

I am not so confident with this SoC as I didn't write any kernel codes
for Exynos3250 devices. Anyway, as the syntax and usage appears good to me.

Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>

> ---
>  arch/arm/boot/dts/exynos3250-monk.dts   | 12 ++++++++++++
>  arch/arm/boot/dts/exynos3250-rinato.dts | 12 ++++++++++++
>  2 files changed, 24 insertions(+)
> 
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[PATCH v4 7/9] ARM: dts: Add the support for exynos busfreq on Exynos3250-based Rinato/Monk board

[Chanwoo Choi]

This patch adds the Exynos3250 memory-bus node which includes the regulator
and devfreq-event phandle. The devfreq-event phandle is used for the
governor of devfreq device and provide the current usage state of
MIF (Memory Interface) / INT (Internal) memory bus group.

Cc: Kukjin Kim <kgene@kernel.org>
Cc: Myungjoo Ham <myungjoo.ham@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Youngjun Cho <yj44.cho@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
---
 arch/arm/boot/dts/exynos3250-monk.dts   | 12 ++++++++++++
 arch/arm/boot/dts/exynos3250-rinato.dts | 12 ++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/arch/arm/boot/dts/exynos3250-monk.dts b/arch/arm/boot/dts/exynos3250-monk.dts
index fcceb59..efadb16 100644
--- a/arch/arm/boot/dts/exynos3250-monk.dts
+++ b/arch/arm/boot/dts/exynos3250-monk.dts
@@ -460,6 +460,18 @@
 	};
 };
 
+&memory_bus_mif {
+	devfreq-events = <&ppmu_dmc0_3>, <&ppmu_dmc1_3>;
+	vdd-mem-supply = <&buck1_reg>;
+	status = "okay";
+};
+
+&memory_bus_int {
+	devfreq-events = <&ppmu_leftbus_3>, <&ppmu_rightbus_3>;
+	vdd-mem-supply = <&buck3_reg>;
+	status = "okay";
+};
+
 &xusbxti {
 	clock-frequency = <24000000>;
 };
diff --git a/arch/arm/boot/dts/exynos3250-rinato.dts b/arch/arm/boot/dts/exynos3250-rinato.dts
index 9dd1ce1..cf800ed 100644
--- a/arch/arm/boot/dts/exynos3250-rinato.dts
+++ b/arch/arm/boot/dts/exynos3250-rinato.dts
@@ -635,6 +635,18 @@
 	};
 };
 
+&memory_bus_mif {
+	devfreq-events = <&ppmu_dmc0_3>, <&ppmu_dmc1_3>;
+	vdd-mem-supply = <&buck1_reg>;
+	status = "okay";
+};
+
+&memory_bus_int {
+	devfreq-events = <&ppmu_leftbus_3>, <&ppmu_rightbus_3>;
+	vdd-mem-supply = <&buck3_reg>;
+	status = "okay";
+};
+
 &xusbxti {
 	clock-frequency = <24000000>;
 };
-- 
1.8.5.5