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7fb0f1846a
With a less intrusive patch. I'm thinking that the hs400 values for other gru devices are statistical outliers, since most rk3399 platform seem to use hs200 for this.
36 lines
1.0 KiB
Diff
36 lines
1.0 KiB
Diff
From bc25983bc1efb11656f7b9951de979e1959e8eef Mon Sep 17 00:00:00 2001
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From: Samuel Dionne-Riel <samuel@dionne-riel.com>
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Date: Fri, 24 Jan 2020 19:17:12 -0500
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Subject: [PATCH] gru: Force hs200 for eMMC
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hs400, at least on gru-dumo, a gru-scarlet, fails.
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---
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arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi | 10 +---------
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1 file changed, 1 insertion(+), 9 deletions(-)
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diff --git a/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi
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index dd5624975c9b4..1221894c54977 100644
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--- a/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi
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+++ b/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi
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@@ -490,16 +490,8 @@ ap_i2c_audio: &i2c8 {
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};
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&sdhci {
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- /*
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- * Signal integrity isn't great at 200 MHz and 150 MHz (DDR) gives the
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- * same (or nearly the same) performance for all eMMC that are intended
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- * to be used.
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- */
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- assigned-clock-rates = <150000000>;
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-
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bus-width = <8>;
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- mmc-hs400-1_8v;
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- mmc-hs400-enhanced-strobe;
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+ mmc-hs200-1_8v;
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non-removable;
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status = "okay";
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};
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--
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2.23.1
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