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Wed, 05 Nov 2025 12:59:46 -0800 (PST) Received: from localhost.localdomain ([2600:1700:fb0:1bc0::54]) by smtp.gmail.com with ESMTPSA id 006d021491bc7-656c5713288sm160312eaf.5.2025.11.05.12.59.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 05 Nov 2025 12:59:45 -0800 (PST) From: Chris Morgan To: linux-rockchip@lists.infradead.org Cc: devicetree@vger.kernel.org, sebastian.reichel@collabora.com, damon.ding@rock-chips.com, jbx6244@gmail.com, heiko@sntech.de, conor+dt@kernel.org, krzk+dt@kernel.org, robh@kernel.org, Chris Morgan Subject: [PATCH 4/5] arm64: dts: rockchip: Enable HS400 for Indiedroid Nova Date: Wed, 5 Nov 2025 14:57:07 -0600 Message-ID: <20251105205708.732125-5-macroalpha82@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251105205708.732125-1-macroalpha82@gmail.com> References: <20251105205708.732125-1-macroalpha82@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251105_125947_655471_CF26B042 X-CRM114-Status: GOOD ( 11.87 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org From: Chris Morgan Once the DLL_STRBIN_TAPNUM_DEFAULT is set to the correct value [1], the workaround to ensure stable eMMC operation is no longer needed. I have observed testing this that hdparm went from: "Timing buffered disk reads: 502 MB in 3.00 seconds = 167.14 MB/sec" to the following: "Timing buffered disk reads: 832 MB in 3.00 seconds = 277.32 MB/sec" [1] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/drivers/mmc/host/sdhci-of-dwcmshc.c?id=a28352cf2d2f8380e7aca8cb61682396dca7a991 Fixes: 3900160e164b ("arm64: dts: rockchip: Add Indiedroid Nova board") Signed-off-by: Chris Morgan --- arch/arm64/boot/dts/rockchip/rk3588s-indiedroid-nova.dts | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/rockchip/rk3588s-indiedroid-nova.dts b/arch/arm64/boot/dts/rockchip/rk3588s-indiedroid-nova.dts index 62c8c8f68713..0796ba6d2504 100644 --- a/arch/arm64/boot/dts/rockchip/rk3588s-indiedroid-nova.dts +++ b/arch/arm64/boot/dts/rockchip/rk3588s-indiedroid-nova.dts @@ -561,10 +561,10 @@ &saradc { status = "okay"; }; -/* HS400 modes seemed to cause io errors. */ &sdhci { bus-width = <8>; - no-mmc-hs400; + mmc-hs400-1_8v; + mmc-hs400-enhanced-strobe; no-sd; no-sdio; non-removable; -- 2.43.0 _______________________________________________ Linux-rockchip mailing list Linux-rockchip@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-rockchip