29 lines
1000 B
Diff
29 lines
1000 B
Diff
From: Markus Fritsche <mfritsche@reauktion.de>
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Subject: [PATCH] arm64: dts: rockchip: rk3399-pinebook-pro: cap spi1 to 10 MHz
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The on-board SPI flash on the Pinebook Pro is reachable via spi1; setting
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spi-max-frequency below the controller's nominal max keeps the bus stable
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across the variants of NOR flash shipped with the laptop. 10 MHz is the
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community-validated upper bound that all observed parts handle without
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read-back errors during routine boot probes.
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scope: board/pinebook-pro
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fleet: fresnel
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Signed-off-by: Markus Fritsche <mfritsche@reauktion.de>
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---
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arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts b/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts
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--- a/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts
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+++ b/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts
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@@ -947,6 +1029,7 @@
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};
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&spi1 {
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+ max-freq = <10000000>;
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status = "okay";
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spiflash: flash@0 {
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