linux-kernel - [PATCH 0/2] arm64: dts: renesas: Add SD/OE pin properties

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Message-Id: <20240926180903.479895-1-sean.anderson@linux.dev>
Date: Thu, 26 Sep 2024 14:09:01 -0400
From: Sean Anderson <sean.anderson@...ux.dev>
To: Arnd Bergmann <arnd@...db.de>,
	Olof Johansson <olof@...om.net>,
	linux-arm-kernel@...ts.infradead.org
Cc: Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Rob Herring <robh@...nel.org>,
	linux-renesas-soc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org,
	Conor Dooley <conor+dt@...nel.org>,
	Magnus Damm <magnus.damm@...il.com>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Sean Anderson <sean.anderson@...ux.dev>
Subject: [PATCH 0/2] arm64: dts: renesas: Add SD/OE pin properties

Linux can configure almost every part of this clock generator without
relying on the OTP settings. However, the correct configuration for the
SD/OE pin cannot be determined automatically. Therefore, add the
appropriate properties to configure this pin.

I have CC'd some people who appear to have access to the following
boards which use the versaclock5:

- Salvator-X
- HiHope RZ/G2[MN] Main Board
- Beacon Embedded Works RZ/G2N Development Kit

as I could not find schematics for these boards. You can help me out by
(pick one):

- Run the following command and send me the output:

    $ grep 10: /sys/kernel/debug/regmap/*-006a/registers

- Measure the voltage on the SD/OE pin on a functioning board.
- Inspect (or send me) the schematic to determine the state of the SD/OE
  pin during normal operation.

My suspicion is that all of these boards use the same configuration
(SD/OE pin tied high) owing to their common design heritage. Thanks in
advance.

Sean Anderson (2):
  arm64: dts: renesas: salvator-xs: Add SD/OE pin properties
  arm64: dts: renesas: ulcb: Add SD/OE pin properties

 arch/arm64/boot/dts/renesas/salvator-xs.dtsi | 2 ++
 arch/arm64/boot/dts/renesas/ulcb.dtsi        | 2 ++
 2 files changed, 4 insertions(+)

-- 
2.35.1.1320.gc452695387.dirty