* [PATCH mvebu-dt64] arm64: dts: armada-3720-turris-mox: forbid SDR104 on SDIO for FCC purposes
@ 2020-04-30 23:11 Marek Behún
2020-05-17 16:56 ` Gregory CLEMENT
0 siblings, 1 reply; 2+ messages in thread
From: Marek Behún @ 2020-04-30 23:11 UTC (permalink / raw)
To: Gregory CLEMENT; +Cc: SoC Team, arm-soc, Linux ARM, Marek Behún
Use sdhci-caps-mask to forbid SDR104 mode on the SDIO capable SDHCI
controller. Without this the device cannot pass electromagnetic
interference certifications.
Fixes: 7109d817db2e ("arm64: dts: marvell: add DTS for Turris Mox")
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Gregory CLEMENT <gregory.clement@bootlin.com>
---
arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts b/arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts
index bb42d1e6a4e9..47fee66c70cb 100644
--- a/arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts
+++ b/arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts
@@ -179,6 +179,8 @@ &sdhci1 {
marvell,pad-type = "sd";
vqmmc-supply = <&vsdio_reg>;
mmc-pwrseq = <&sdhci1_pwrseq>;
+ /* forbid SDR104 for FCC purposes */
+ sdhci-caps-mask = <0x2 0x0>;
status = "okay";
};
--
2.24.1
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^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH mvebu-dt64] arm64: dts: armada-3720-turris-mox: forbid SDR104 on SDIO for FCC purposes
2020-04-30 23:11 [PATCH mvebu-dt64] arm64: dts: armada-3720-turris-mox: forbid SDR104 on SDIO for FCC purposes Marek Behún
@ 2020-05-17 16:56 ` Gregory CLEMENT
0 siblings, 0 replies; 2+ messages in thread
From: Gregory CLEMENT @ 2020-05-17 16:56 UTC (permalink / raw)
To: Marek Behún; +Cc: SoC Team, arm-soc, Linux ARM, Marek Behún
Hi Marek,
> Use sdhci-caps-mask to forbid SDR104 mode on the SDIO capable SDHCI
> controller. Without this the device cannot pass electromagnetic
> interference certifications.
>
> Fixes: 7109d817db2e ("arm64: dts: marvell: add DTS for Turris Mox")
> Signed-off-by: Marek Behún <marek.behun@nic.cz>
> Cc: Gregory CLEMENT <gregory.clement@bootlin.com>
Applied on mvebu/dt64
Thanks,
Gregory
> ---
> arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts b/arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts
> index bb42d1e6a4e9..47fee66c70cb 100644
> --- a/arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts
> +++ b/arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts
> @@ -179,6 +179,8 @@ &sdhci1 {
> marvell,pad-type = "sd";
> vqmmc-supply = <&vsdio_reg>;
> mmc-pwrseq = <&sdhci1_pwrseq>;
> + /* forbid SDR104 for FCC purposes */
> + sdhci-caps-mask = <0x2 0x0>;
> status = "okay";
> };
>
> --
> 2.24.1
>
--
Gregory Clement, Bootlin
Embedded Linux and Kernel engineering
http://bootlin.com
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linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
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2020-04-30 23:11 [PATCH mvebu-dt64] arm64: dts: armada-3720-turris-mox: forbid SDR104 on SDIO for FCC purposes Marek Behún
2020-05-17 16:56 ` Gregory CLEMENT
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