diff mbox series

ARM: dts: rockchip: Limit WiFi TX power on rk3288-veyron-jerry

Message ID 20190723225258.93058-1-mka@chromium.org (mailing list archive)
State New, archived
Headers show
Series ARM: dts: rockchip: Limit WiFi TX power on rk3288-veyron-jerry | expand

Commit Message

Matthias Kaehlcke July 23, 2019, 10:52 p.m. UTC 
The downstream Chrome OS 3.14 kernel for jerry limits WiFi TX power
through calibration data in the device tree [1]. Add a DT node for
the WiFi chip and use the downstream calibration data.

Not all calibration data entries have the length specified in the
binding (Documentation/devicetree/bindings/net/wireless/marvell-8xxx.txt),
however this is the data used by the downstream ('official') kernel
and the binding mentions that "the length can vary between hw
versions".

[1] https://crrev.com/c/271237

Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
---
 arch/arm/boot/dts/rk3288-veyron-jerry.dts | 147 ++++++++++++++++++++++
 1 file changed, 147 insertions(+)

Comments

Doug Anderson July 24, 2019, 7:56 p.m. UTC | #1 
Hi,

On Tue, Jul 23, 2019 at 3:53 PM Matthias Kaehlcke <mka@chromium.org> wrote:
>
> The downstream Chrome OS 3.14 kernel for jerry limits WiFi TX power
> through calibration data in the device tree [1]. Add a DT node for
> the WiFi chip and use the downstream calibration data.
>
> Not all calibration data entries have the length specified in the
> binding (Documentation/devicetree/bindings/net/wireless/marvell-8xxx.txt),
> however this is the data used by the downstream ('official') kernel
> and the binding mentions that "the length can vary between hw
> versions".
>
> [1] https://crrev.com/c/271237
>
> Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
> ---
>  arch/arm/boot/dts/rk3288-veyron-jerry.dts | 147 ++++++++++++++++++++++
>  1 file changed, 147 insertions(+)

I agree that this matches what's downstream and seems right.

As you pointed out the bindings are a bit on the sketchy side,
claiming a certain length in one place but then saying that the length
depends on the HW version in another place.  I'll also point out that
the bindings are inconsistent about the name that should be used.
AKA:

marvell,caldata-txpwrlimit-2g
 -vs-
marvell,caldata_00_txpwrlimit_2g_cfg_set

...but I think the answer is that it doesn't matter at all from a
practical point of view.  The code seems to just find everything that
starts with "marvell,caldata" and send the binary blindly to the WiFi
card.  Presumably there is enough of a header in the opaque binary
data that the card can make sense of what it's being sent.


So it seems like this is the best we can do given the current state of
the world.

Reviewed-by: Douglas Anderson <dianders@chromium.org>
Heiko Stübner July 25, 2019, 8:23 p.m. UTC | #2 
Am Mittwoch, 24. Juli 2019, 00:52:58 CEST schrieb Matthias Kaehlcke:
> The downstream Chrome OS 3.14 kernel for jerry limits WiFi TX power
> through calibration data in the device tree [1]. Add a DT node for
> the WiFi chip and use the downstream calibration data.
> 
> Not all calibration data entries have the length specified in the
> binding (Documentation/devicetree/bindings/net/wireless/marvell-8xxx.txt),
> however this is the data used by the downstream ('official') kernel
> and the binding mentions that "the length can vary between hw
> versions".
> 
> [1] https://crrev.com/c/271237
> 
> Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
> ---
>  arch/arm/boot/dts/rk3288-veyron-jerry.dts | 147 ++++++++++++++++++++++
>  1 file changed, 147 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/rk3288-veyron-jerry.dts b/arch/arm/boot/dts/rk3288-veyron-jerry.dts
> index b1613af83d5d..2d0d5a4603ba 100644
> --- a/arch/arm/boot/dts/rk3288-veyron-jerry.dts
> +++ b/arch/arm/boot/dts/rk3288-veyron-jerry.dts
> @@ -82,6 +82,153 @@
>  	};
>  };
>  
> +&sdio0 {

added #address-cells = <1> and #size-cells = <0> here
as it was creating dtc warnings due to the reg=1 below

> +	mwifiex: wifi@1 {
> +		compatible = "marvell,sd8897";
> +		reg = <1>;
> +		status = "okay";

dropped status ... okay is the default and the wifi node only was
added to this board, not before.

and applied for 5.4

Thanks
Heiko
diff mbox series

Patch

diff --git a/arch/arm/boot/dts/rk3288-veyron-jerry.dts b/arch/arm/boot/dts/rk3288-veyron-jerry.dts
index b1613af83d5d..2d0d5a4603ba 100644
--- a/arch/arm/boot/dts/rk3288-veyron-jerry.dts
+++ b/arch/arm/boot/dts/rk3288-veyron-jerry.dts
@@ -82,6 +82,153 @@ 
 	};
 };
 
+&sdio0 {
+	mwifiex: wifi@1 {
+		compatible = "marvell,sd8897";
+		reg = <1>;
+		status = "okay";
+
+		marvell,caldata-txpwrlimit-2g = /bits/ 8 <
+0x01 0x00 0x06 0x00 0x08 0x02 0x89 0x01
+0x24 0x00 0x67 0x09 0x14 0x01 0x00 0x0f 0x01 0x0c 0x02 0x0c 0x03 0x0c 0x04 0x0c
+0x05 0x0c 0x06 0x0c 0x07 0x09 0x08 0x09 0x09 0x09 0x0a 0x0c 0x0b 0x0c 0x0c 0x0c
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+0x05 0x0c 0x06 0x0c 0x07 0x09 0x08 0x09 0x09 0x09 0x0a 0x0c 0x0b 0x0c 0x0c 0x0c
+0x0d 0x09 0x0e 0x09 0x0f 0x09>;
+
+		marvell,caldata-txpwrlimit-5g-sub0 = /bits/ 8 <
+0x01 0x00 0x06 0x00 0xf0 0x01 0x89 0x01
+0x3a 0x00 0x88 0x13 0x14 0x24 0x01 0x0c 0x02 0x0c 0x03 0x0c 0x04 0x0a 0x05 0x0a
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+0x15 0x05 0x16 0x05 0x17 0x05 0x18 0x05 0x19 0x05 0x1a 0x05 0x1b 0x05>;
+
+		marvell,caldata-txpwrlimit-5g-sub1 = /bits/ 8 <
+0x01 0x00 0x06 0x00 0xaa 0x02 0x89 0x01
+0x3a 0x00 0x88 0x13 0x14 0x64 0x01 0x0c 0x02 0x0c 0x03 0x0c 0x04 0x0a 0x05 0x0a
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+0x08 0x08 0x09 0x08 0x0a 0x0a 0x0b 0x0a 0x0c 0x0a 0x0d 0x08 0x0e 0x08 0x0f 0x08
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+0x18 0x05 0x19 0x05 0x1a 0x05 0x1b 0x05>;
+
+		marvell,caldata-txpwrlimit-5g-sub2 = /bits/ 8 <
+0x01 0x00 0x06 0x00 0x36 0x01 0x89 0x01
+0x3a 0x00 0x88 0x13 0x14 0x95 0x01 0x0b 0x02 0x0b 0x03 0x0b 0x04 0x0a 0x05 0x0a
+0x06 0x0a 0x07 0x08 0x08 0x08 0x09 0x08 0x0a 0x0a 0x0b 0x0a 0x0c 0x0a 0x0d 0x08
+0x0e 0x08 0x0f 0x08 0x10 0x04 0x11 0x04 0x12 0x05 0x13 0x05 0x14 0x05 0x15 0x05
+0x16 0x04 0x17 0x04 0x18 0x05 0x19 0x05 0x1a 0x05 0x1b 0x05 0x89 0x01 0x3a 0x00
+0x88 0x13 0x14 0x99 0x01 0x0b 0x02 0x0b 0x03 0x0b 0x04 0x0a 0x05 0x0a 0x06 0x0a
+0x07 0x08 0x08 0x08 0x09 0x08 0x0a 0x0a 0x0b 0x0a 0x0c 0x0a 0x0d 0x08 0x0e 0x08
+0x0f 0x08 0x10 0x04 0x11 0x04 0x12 0x05 0x13 0x05 0x14 0x05 0x15 0x05 0x16 0x04
+0x17 0x04 0x18 0x05 0x19 0x05 0x1a 0x05 0x1b 0x05 0x89 0x01 0x3a 0x00 0x88 0x13
+0x14 0x9d 0x01 0x0b 0x02 0x0b 0x03 0x0b 0x04 0x0a 0x05 0x0a 0x06 0x0a 0x07 0x08
+0x08 0x08 0x09 0x08 0x0a 0x0a 0x0b 0x0a 0x0c 0x0a 0x0d 0x08 0x0e 0x08 0x0f 0x08
+0x10 0x04 0x11 0x04 0x12 0x05 0x13 0x05 0x14 0x05 0x15 0x05 0x16 0x04 0x17 0x04
+0x18 0x05 0x19 0x05 0x1a 0x05 0x1b 0x05 0x89 0x01 0x3a 0x00 0x88 0x13 0x14 0xa1
+0x01 0x0b 0x02 0x0b 0x03 0x0b 0x04 0x0a 0x05 0x0a 0x06 0x0a 0x07 0x08 0x08 0x08
+0x09 0x08 0x0a 0x0a 0x0b 0x0a 0x0c 0x0a 0x0d 0x08 0x0e 0x08 0x0f 0x08 0x10 0x04
+0x11 0x04 0x12 0x05 0x13 0x05 0x14 0x05 0x15 0x05 0x16 0x04 0x17 0x04 0x18 0x05
+0x19 0x05 0x1a 0x05 0x1b 0x05 0x89 0x01 0x3a 0x00 0x88 0x13 0x14 0xa5 0x01 0x0b
+0x02 0x0b 0x03 0x0b 0x04 0x0a 0x05 0x0a 0x06 0x0a 0x07 0x08 0x08 0x08 0x09 0x08
+0x0a 0x0a 0x0b 0x0a 0x0c 0x0a 0x0d 0x08 0x0e 0x08 0x0f 0x08 0x10 0x04 0x11 0x04
+0x12 0x05 0x13 0x05 0x14 0x05 0x15 0x05 0x16 0x04 0x17 0x04 0x18 0x05 0x19 0x05
+0x1a 0x05 0x1b 0x05>;
+	};
+};
+
 &sdmmc {
 	disable-wp;
 	pinctrl-names = "default";