From: Chris Morgan <macroalpha82@gmail.com>
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 <macromorgan@hotmail.com>
Subject: [PATCH 4/5] arm64: dts: rockchip: Enable HS400 for Indiedroid Nova
Date: Wed, 5 Nov 2025 14:57:07 -0600 [thread overview]
Message-ID: <20251105205708.732125-5-macroalpha82@gmail.com> (raw)
In-Reply-To: <20251105205708.732125-1-macroalpha82@gmail.com>
From: Chris Morgan <macromorgan@hotmail.com>
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 <macromorgan@hotmail.com>
---
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
next prev parent reply other threads:[~2025-11-05 20:59 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-05 20:57 [PATCH 0/5] Indiedroid Nova Devicetree Updates Chris Morgan
2025-11-05 20:57 ` [PATCH 1/5] arm64: dts: rockchip: Add device type for Indiedroid Nova Chris Morgan
2025-11-05 20:57 ` [PATCH 2/5] arm64: dts: rockchip: Add Additional pinctrl defs " Chris Morgan
2025-11-06 19:45 ` Heiko Stuebner
2025-11-06 23:45 ` Chris Morgan
2025-11-05 20:57 ` [PATCH 3/5] arm64: dts: rockchip: enable NPU on " Chris Morgan
2025-11-05 20:57 ` Chris Morgan [this message]
2025-11-05 23:18 ` [PATCH 4/5] arm64: dts: rockchip: Enable HS400 for " Heiko Stuebner
2025-11-06 1:06 ` Chris Morgan
2025-11-05 20:57 ` [PATCH 5/5] arm64: dts: rockchip: Fix DMA for Indiedroid Nova Bluetooth Chris Morgan
2025-11-06 22:58 ` (subset) [PATCH 0/5] Indiedroid Nova Devicetree Updates Heiko Stuebner
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