* [PATCH] arm64: dts: fsl: librem5: Limit the USB to 5V
@ 2019-06-20 17:04 Angus Ainslie (Purism)
2019-06-24 2:08 ` Shawn Guo
0 siblings, 1 reply; 2+ messages in thread
From: Angus Ainslie (Purism) @ 2019-06-20 17:04 UTC (permalink / raw)
To: angus.ainslie
Cc: Rob Herring, Mark Rutland, Shawn Guo, Sascha Hauer,
Pengutronix Kernel Team, Fabio Estevam, NXP Linux Team,
Angus Ainslie (Purism), Pavel Machek, devicetree,
linux-arm-kernel, linux-kernel
The charge controller can handle 14V but the PTC on the devkit can only
handle 6V so limit the negotiated voltage to 5V.
Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
---
arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
index 3f4736fd3cea..ec85ada77955 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
@@ -353,7 +353,7 @@
sink-pdos = <PDO_FIXED(5000, 2000, PDO_FIXED_USB_COMM |
PDO_FIXED_DUAL_ROLE |
PDO_FIXED_DATA_SWAP )
- PDO_VAR(5000, 12000, 2000)>;
+ PDO_VAR(5000, 3000, 3000)>;
op-sink-microwatt = <10000000>;
ports {
--
2.17.1
^ permalink raw reply related [flat|nested] 2+ messages in thread* Re: [PATCH] arm64: dts: fsl: librem5: Limit the USB to 5V
2019-06-20 17:04 [PATCH] arm64: dts: fsl: librem5: Limit the USB to 5V Angus Ainslie (Purism)
@ 2019-06-24 2:08 ` Shawn Guo
0 siblings, 0 replies; 2+ messages in thread
From: Shawn Guo @ 2019-06-24 2:08 UTC (permalink / raw)
To: Angus Ainslie (Purism)
Cc: angus.ainslie, Rob Herring, Mark Rutland, Sascha Hauer,
Pengutronix Kernel Team, Fabio Estevam, NXP Linux Team,
Pavel Machek, devicetree, linux-arm-kernel, linux-kernel
On Thu, Jun 20, 2019 at 11:04:39AM -0600, Angus Ainslie (Purism) wrote:
> The charge controller can handle 14V but the PTC on the devkit can only
> handle 6V so limit the negotiated voltage to 5V.
>
> Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
Prefix 'arm64: dts: librem5: ...' should be fine, so I changed it and
applied the patch.
Shawn
> ---
> arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
> index 3f4736fd3cea..ec85ada77955 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
> @@ -353,7 +353,7 @@
> sink-pdos = <PDO_FIXED(5000, 2000, PDO_FIXED_USB_COMM |
> PDO_FIXED_DUAL_ROLE |
> PDO_FIXED_DATA_SWAP )
> - PDO_VAR(5000, 12000, 2000)>;
> + PDO_VAR(5000, 3000, 3000)>;
> op-sink-microwatt = <10000000>;
>
> ports {
> --
> 2.17.1
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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2019-06-20 17:04 [PATCH] arm64: dts: fsl: librem5: Limit the USB to 5V Angus Ainslie (Purism)
2019-06-24 2:08 ` Shawn Guo
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