Thread (8 messages) 8 messages, 3 authors, 2026-01-14

Re: [PATCH v2 0/3] Fix sd card support for RK3576

From: Shawn Lin <shawn.lin@rock-chips.com>
Date: 2026-01-14 03:16:52
Also in: linux-rockchip

在 2026/01/14 星期三 4:35, Marco Schirrmeister 写道:
Hi Shawn,

On Tue, Jan 13, 2026 at 2:19 AM Shawn Lin [off-list ref] wrote:
quoted
This series fixes this mess but only adds slot-gpio support for RK3576-EVB1.
Other boards are also missing slot-gpio support, but folks are all cced for
checking the boards they are using.

Please review and test
I tested this series on the FriendlyElec NanoPi R76S.
With the addition of 'cd-gpios = <&gpio0 RK_PA7 GPIO_ACTIVE_LOW>;'
in the board DTS, the µSD hot-plug now works correctly.
Thanks for testing.
However, even with this fix, the NanoPi R76S still suffers from the
constant 400kHz retuning loop when runtime PM is enabled. I will send
a v2 of my driver quirk to address this board-specific instability.
When talking about board-specific instability of SD support, the
intuitive reaction is bus more or frequency related. I never came
across this kind of problem which caused by runtime PM support. That
being said, there is potential unveiled problems for your boards.
I will comment your v2 to see if we could sort them out.
Link to v1: https://lore.kernel.org/all/20260110010715.1610159-1-mschirrmeister@gmail.com/T/#t (local)

Tested-by: Marco Schirrmeister <redacted>
  
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