Re: [PATCH] arm64: dts: rockchip: set PHY address of MT7531 switch to 0x1f

From: Arınç ÜNAL
Date: Thu Mar 14 2024 - 08:37:54 EST


Hello Heiko.

On 14.03.2024 15:31, Heiko Stübner wrote:
Am Donnerstag, 14. März 2024, 13:24:35 CET schrieb Arınç ÜNAL via B4 Relay:
From: Arınç ÜNAL <arinc.unal@xxxxxxxxxx>

The MT7531 switch listens on PHY address 0x1f on an MDIO bus. I've got two
findings that support this. There's no bootstrapping option to change the
PHY address of the switch. The Linux driver hardcodes 0x1f as the PHY
address of the switch. So the reg property on the device tree is currently
ignored by the Linux driver.

Therefore, describe the correct PHY address on Banana Pi BPI-R2 Pro that
has this switch.

Signed-off-by: Arınç ÜNAL <arinc.unal@xxxxxxxxxx>

Fixes: c1804463e5c6 ("arm64: dts: rockchip: Add mt7531 dsa node to BPI-R2-Pro board")

Do I need to resubmit with this added, or would you add it while applying
the patch?

Arınç