From: Jonas Karlman <jonas@kwiboo.se>
To: Chukun Pan <amadeus@jmu.edu.cn>
Cc: conor+dt@kernel.org, devicetree@vger.kernel.org, heiko@sntech.de,
krzk+dt@kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-mmc@vger.kernel.org,
linux-rockchip@lists.infradead.org
Subject: Re: [PATCH 0/3] rockchip: Add support for onboard eMMC on Radxa E20C
Date: Thu, 6 Mar 2025 10:16:00 +0100 [thread overview]
Message-ID: <ccd8be6a-c8d4-407b-906a-e4788a365775@kwiboo.se> (raw)
In-Reply-To: <20250306090001.113127-1-amadeus@jmu.edu.cn>
Hi Chukun,
On 2025-03-06 10:00, Chukun Pan wrote:
> Hi,
>
>> Driver changes to use different delay and tap num is needed to be able
>> to support HS400 modes, something for a future series. With this HS200
>> mode should work:
>
> I have tried HS200 mode on other rk3528 boards and it works fine,
> so can we enable HS200 mode for Radxa E20C first?
The host controller already report the HS200 mode, and as shown in cover
letter HS200 mode is being enabled/used with this series.
However, the driver must use different tap/delay num for HS400(ES) modes.
At top of [1] there is a commit that changes to use same tap/delay num
as vendor kernel and what I have tested worked in U-Boot. That commit
needs to be re-worked before it is ready. Also see [2] for pending work
before I plan to complete before moving on to the dwcmshc driver.
[1] https://github.com/Kwiboo/linux-rockchip/commits/next-20250227-rk3528-rk3506/
[2] https://github.com/Kwiboo/linux-rockchip/commits/next-20250305-rk3528/
Regards,
Jonas
>
> Thanks,
> Chukun
>
next prev parent reply other threads:[~2025-03-06 9:16 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-05 21:41 [PATCH 0/3] rockchip: Add support for onboard eMMC on Radxa E20C Jonas Karlman
2025-03-05 21:41 ` [PATCH 1/3] dt-bindings: mmc: sdhci-of-dwcmhsc: Add compatible string for RK3528 Jonas Karlman
2025-03-06 9:36 ` Krzysztof Kozlowski
2025-03-06 22:53 ` Jonas Karlman
2025-03-12 11:24 ` Ulf Hansson
2025-03-05 21:41 ` [PATCH 2/3] arm64: dts: rockchip: Add SDHCI controller " Jonas Karlman
2025-03-05 21:41 ` [PATCH 3/3] arm64: dts: rockchip: Enable onboard eMMC on Radxa E20C Jonas Karlman
2025-03-06 9:00 ` [PATCH 0/3] rockchip: Add support for " Chukun Pan
2025-03-06 9:16 ` Jonas Karlman [this message]
2025-03-12 19:38 ` (subset) " Heiko Stuebner
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