From: Marek Vasut <marex@denx.de>
To: Frieder Schrempf <frieder@fris.de>,
devicetree@vger.kernel.org,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Shawn Guo <shawnguo@kernel.org>
Cc: Frieder Schrempf <frieder.schrempf@kontron.de>,
Fabio Estevam <festevam@gmail.com>,
Heiko Thiery <heiko.thiery@gmail.com>,
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
NXP Linux Team <linux-imx@nxp.com>,
Oleksij Rempel <linux@rempel-privat.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>
Subject: Re: [PATCH 6/6] arm64: dts: imx8mm-kontron: Add support for reading SD_VSEL signal
Date: Mon, 13 Feb 2023 17:08:48 +0100 [thread overview]
Message-ID: <7b1a8b7d-2269-7ff2-d480-ae5de8c4cc4e@denx.de> (raw)
In-Reply-To: <20230213155833.1644366-7-frieder@fris.de>
On 2/13/23 16:58, Frieder Schrempf wrote:
> From: Frieder Schrempf <frieder.schrempf@kontron.de>
>
> This fixes the LDO5 regulator handling of the pca9450 driver by
> taking the status of the SD_VSEL into account to determine which
> configuration register is used for the voltage setting.
>
> Even without this change there is no functional issue, as the code
> for switching the voltage in sdhci.c currently switches both, the
> VSELECT/SD_VSEL signal and the regulator voltage at the same time
> and doesn't run into an invalid corner case.
>
> We should still make sure, that we always use the correct register
> when controlling the regulator. At least in U-Boot this fixes an
> actual bug where the wrong IO voltage is used.
>
> Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
I may have a kind-of obvious request, since we removed those SD_VSEL
very recently from other boards, could you just revert all those patches
and only fill in the SION bit in V2 on all those boards too ? That way,
we fix the LDO5 regulator for everyone who used it before.
next prev parent reply other threads:[~2023-02-13 16:08 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-13 15:58 [PATCH 0/6] Use correct LDO5 control registers for PCA9450 Frieder Schrempf
2023-02-13 15:58 ` [PATCH 1/6] dt-bindings: regulator: pca9450: Document new usage of sd-vsel-gpios Frieder Schrempf
2023-02-15 20:02 ` Rob Herring
2023-02-16 1:27 ` Marek Vasut
2023-02-16 2:30 ` Rob Herring
2023-02-16 10:15 ` Frieder Schrempf
2023-02-13 15:58 ` [PATCH 6/6] arm64: dts: imx8mm-kontron: Add support for reading SD_VSEL signal Frieder Schrempf
2023-02-13 16:08 ` Marek Vasut [this message]
2023-02-13 16:15 ` Frieder Schrempf
2023-02-13 16:15 ` Marco Felsch
2023-02-13 16:18 ` Frieder Schrempf
2023-02-13 21:02 ` Fabio Estevam
2023-02-13 18:12 ` Marek Vasut
2023-02-13 19:56 ` Marco Felsch
2023-02-13 20:59 ` Marek Vasut
2023-02-14 8:10 ` Marco Felsch
2023-02-14 8:26 ` Frieder Schrempf
2023-02-14 11:46 ` Marco Felsch
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