Thread (10 messages) 10 messages, 3 authors, 2021-03-11

Re: [RESEND PATCH v5 2/4] arm64: dts: rk3399: Add dfi and dmc nodes.

From: Daniel Lezcano <hidden>
Date: 2021-03-11 11:59:36
Also in: linux-devicetree, linux-rockchip, lkml

On 09/03/2021 12:42, Johan Jonker wrote:
Hi Daniel,

Some comments. Have a look if it's useful or that you disagree with.

New nodes should be verifiable if possible.
Especially with so many properties.
Could you convert rockchip-dfi.txt and rk3399_dmc.txt to yaml instead of
changing old txt documents?
Add rockchip-dfi.yaml and rk3399_dmc.yaml before this patch in version 6.
I don't have a lot of bandwidth to do it but I will give a try.

Thanks for reviewing

  -- Daniel
Nodes and properties have a sort order. Please fix.
Some goes for [RESEND PATCH v5 3/4].

(This is a generic dtsi. How about cooling and dmc ??)

----
Heiko rules:

compatible
reg
interrupts
[alphabetical]
status [if needed]

----
My incomplete list:

For nodes:
If exists on top: model, compatible and chosen.
Sort things without reg alphabetical first,
then sort the rest by reg address.

Inside nodes:
If exists on top: compatible, reg and interrupts.
In alphabetical order the required properties.
Then in alphabetical order the other properties.
And as last things that start with '#' in alphabetical order.
Add status below all other properties for soc internal components with
any board-specifics.
Keep an empty line between properties and nodes.

Exceptions:
Sort pinctrl-0 above pinctrl-names, so it stays in line with clock-names
and dma-names.
Sort simple-audio-card,name above other simple-audio-card properties.
Sort regulator-name above other regulator properties.
Sort regulator-min-microvolt above regulator-max-microvolt.

On 3/9/21 12:38 AM, Daniel Lezcano wrote:
quoted
From: Lin Huang <redacted>

These are required to support DDR DVFS on rk3399 platform.

Signed-off-by: Lin Huang <redacted>
Signed-off-by: Enric Balletbo i Serra <redacted>
Signed-off-by: Gaël PORTAY <redacted>
Signed-off-by: Daniel Lezcano <redacted>
---
 arch/arm64/boot/dts/rockchip/rk3399.dtsi | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
index edbbf35fe19e..6f23d99236fe 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
@@ -1937,6 +1937,25 @@
 		status = "disabled";
 	};
 
+	dfi: dfi@ff630000 {
+		reg = <0x00 0xff630000 0x00 0x4000>;
+		compatible = "rockchip,rk3399-dfi";
+		rockchip,pmu = <&pmugrf>;
+		interrupts = <GIC_SPI 131 IRQ_TYPE_LEVEL_HIGH 0>;
+		clocks = <&cru PCLK_DDR_MON>;
+		clock-names = "pclk_ddr_mon";
+		status = "disabled";
+	};
+
+	dmc: dmc {
+		compatible = "rockchip,rk3399-dmc";
+		rockchip,pmu = <&pmugrf>;
+		devfreq-events = <&dfi>;
+		clocks = <&cru SCLK_DDRC>;
+		clock-names = "dmc_clk";
+		status = "disabled";
+	};
+
 	pinctrl: pinctrl {
 		compatible = "rockchip,rk3399-pinctrl";
 		rockchip,grf = <&grf>;

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