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From: Mathieu Othacehe <othacehe@gnu.org>
To: Stefan Wahren <wahrenst@gmx.net>
Cc: Rob Herring <robh+dt@kernel.org>,
	 Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	 Conor Dooley <conor+dt@kernel.org>,
	Shawn Guo <shawnguo@kernel.org>,
	 Sascha Hauer <s.hauer@pengutronix.de>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	 Fabio Estevam <festevam@gmail.com>,
	 NXP Linux Team <linux-imx@nxp.com>,
	 Li Yang <leoyang.li@nxp.com>,
	 devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	 linux-arm-kernel@lists.infradead.org,
	Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Subject: Re: [PATCH v4 2/2] arm64: dts: imx93-var-som: Add Variscite VAR-SOM-MX93
Date: Fri, 29 Dec 2023 17:48:21 +0100	[thread overview]
Message-ID: <87zfxtosyy.fsf@gnu.org> (raw)
In-Reply-To: <4e3a0328-0ae7-40fa-b37d-16b661e28a1e@gmx.net> (Stefan Wahren's message of "Fri, 29 Dec 2023 15:08:02 +0100")


Hey,

> I also saw in the other Symphony DTS a LED for heartbeat. Is it usable, too?

Yes, I will add it to in v5.

> According to the datasheet the SOM expose 7 UARTs, but only the debug
> UART is enable. What is the reason for this?

So those 7 UARTs are:

UART1: console
UART2: used by the microphone
UART3: used by the resistive touch
UART4: used by the ethernet/resistive touch
UART5: on J18.4,6,8,10 (used by BT)
UART6: on J18.7 and J18.9 (available)
UART7: on J18.3 and J18.5 (used by the M33 firmware)

I will enable UART6, and add a mention about UART7, something like:

/* J18.7, J18.9 */
&lpuart6 {
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_uart6>;
	status = "okay";
};

/* J18.3, J18.5 - used by M33 firmware */
&lpuart7 {
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_uart7>;
	status = "disabled";
};

> Btw the commit log mentions a Wifi (via SDIO?) and audio interface. This
> is currently not supported by Linux?

I am not sure about that, and I would prefer to study that a bit later
on if that's OK :) I can remove it from the commit log as this is
misleading as not already supported / tested.

Thanks,

Mathieu

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

WARNING: multiple messages have this Message-ID (diff)
From: Mathieu Othacehe <othacehe@gnu.org>
To: Stefan Wahren <wahrenst@gmx.net>
Cc: Rob Herring <robh+dt@kernel.org>,
	 Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	 Conor Dooley <conor+dt@kernel.org>,
	Shawn Guo <shawnguo@kernel.org>,
	 Sascha Hauer <s.hauer@pengutronix.de>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	 Fabio Estevam <festevam@gmail.com>,
	 NXP Linux Team <linux-imx@nxp.com>,
	 Li Yang <leoyang.li@nxp.com>,
	 devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	 linux-arm-kernel@lists.infradead.org,
	Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Subject: Re: [PATCH v4 2/2] arm64: dts: imx93-var-som: Add Variscite VAR-SOM-MX93
Date: Fri, 29 Dec 2023 17:48:21 +0100	[thread overview]
Message-ID: <87zfxtosyy.fsf@gnu.org> (raw)
In-Reply-To: <4e3a0328-0ae7-40fa-b37d-16b661e28a1e@gmx.net> (Stefan Wahren's message of "Fri, 29 Dec 2023 15:08:02 +0100")


Hey,

> I also saw in the other Symphony DTS a LED for heartbeat. Is it usable, too?

Yes, I will add it to in v5.

> According to the datasheet the SOM expose 7 UARTs, but only the debug
> UART is enable. What is the reason for this?

So those 7 UARTs are:

UART1: console
UART2: used by the microphone
UART3: used by the resistive touch
UART4: used by the ethernet/resistive touch
UART5: on J18.4,6,8,10 (used by BT)
UART6: on J18.7 and J18.9 (available)
UART7: on J18.3 and J18.5 (used by the M33 firmware)

I will enable UART6, and add a mention about UART7, something like:

/* J18.7, J18.9 */
&lpuart6 {
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_uart6>;
	status = "okay";
};

/* J18.3, J18.5 - used by M33 firmware */
&lpuart7 {
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_uart7>;
	status = "disabled";
};

> Btw the commit log mentions a Wifi (via SDIO?) and audio interface. This
> is currently not supported by Linux?

I am not sure about that, and I would prefer to study that a bit later
on if that's OK :) I can remove it from the commit log as this is
misleading as not already supported / tested.

Thanks,

Mathieu

  reply	other threads:[~2023-12-29 16:49 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-12-27 17:09 [PATCH v4 0/2] Add Variscite VAR-SOM-MX93 support Mathieu Othacehe
2023-12-27 17:09 ` Mathieu Othacehe
2023-12-27 17:09 ` [PATCH v4 1/2] dt-bindings: arm: fsl: Add VAR-SOM-MX93 with Symphony Mathieu Othacehe
2023-12-27 17:09   ` Mathieu Othacehe
2023-12-27 17:09 ` [PATCH v4 2/2] arm64: dts: imx93-var-som: Add Variscite VAR-SOM-MX93 Mathieu Othacehe
2023-12-27 17:09   ` Mathieu Othacehe
2023-12-28 20:46   ` Stefan Wahren
2023-12-28 20:46     ` Stefan Wahren
2023-12-29 13:00     ` Mathieu Othacehe
2023-12-29 13:00       ` Mathieu Othacehe
2023-12-29 14:08       ` Stefan Wahren
2023-12-29 14:08         ` Stefan Wahren
2023-12-29 16:48         ` Mathieu Othacehe [this message]
2023-12-29 16:48           ` Mathieu Othacehe
2023-12-29 17:17           ` Stefan Wahren
2023-12-29 17:17             ` Stefan Wahren

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