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From: Shawn Lin <shawn.lin@linux.dev>
To: Ulf Hansson <ulf.hansson@linaro.org>
Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
	Shawn Lin <shawn.lin@rock-chips.com>
Subject: [PATCH v2 0/2] Validate and clean up UHS/DDR/HS200 timing checks
Date: Tue, 10 Mar 2026 09:35:51 +0800	[thread overview]
Message-ID: <20260310013553.29332-1-shawn.lin@linux.dev> (raw)

From: Shawn Lin <shawn.lin@rock-chips.com>


This series adds validation for UHS/DDR/HS200 timing modes when the host
only supports 1-bit bus width which also fixes a real performance drop issue
due to incorrect hs200 mode switch code. And then cleans up the check in
mmc_host_can_uhs().


Changes in v2:
- updating the temporary variables in the middle and update host's caps(2)
  in the final. (Ulf)

Luke Wang (1):
  mmc: core: Validate UHS/DDR/HS200 timing selection for 1-bit bus width

Shawn Lin (1):
  mmc: core: Remove checking MMC_CAP_4_BIT_DATA from mmc_host_can_uhs()

 drivers/mmc/core/host.c | 14 +++++++++++++-
 drivers/mmc/core/host.h |  6 +-----
 2 files changed, 14 insertions(+), 6 deletions(-)

-- 
2.7.4


             reply	other threads:[~2026-03-10  1:36 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-10  1:35 Shawn Lin [this message]
2026-03-10  1:35 ` [PATCH v2 1/2] mmc: core: Validate UHS/DDR/HS200 timing selection for 1-bit bus width Shawn Lin
2026-03-10  1:35 ` [PATCH v2 2/2] mmc: core: Remove checking MMC_CAP_4_BIT_DATA from mmc_host_can_uhs() Shawn Lin
2026-03-16 15:15 ` [PATCH v2 0/2] Validate and clean up UHS/DDR/HS200 timing checks Ulf Hansson

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