Re: [PATCH] ARM: dts: sun8i: r40: bananapi-m2-ultra: Limit eMMC clock to 37.5 MHz

[Chen-Yu Tsai]

On Wed, 04 Nov 2026 19:51:48 +0100, Jernej Skrabec wrote:
> The Samsung eMMC on Banana Pi M2 Ultra fails with "data error, sending
> stop command" within a second of sustained reads in DDR52 mode at
> 50 MHz. At 37.5 MHz the same board survives a long read/write soak.
> 
> Limit the eMMC clock to 37.5 MHz. Also enable the hardware reset line,
> which is routed to the controller (PC24), so the card can be recovered
> after such errors.
> 
> [...]

Applied to sunxi/dt-for-7.5 in sunxi, thanks!

[1/1] ARM: dts: sun8i: r40: bananapi-m2-ultra: Limit eMMC clock to 37.5 MHz
      https://git.kernel.org/sunxi/linux/c/160738a3721c

Best regards,
-- 
Chen-Yu Tsai <wens@xxxxxxxxxx>