| Message ID | 20231215122848.59534-1-stefan.nagy@ixypsilon.net |
|---|---|
| State | Superseded |
| Headers | show |
| Series | arm64: dts: rockchip: Increase maximum frequency of SPI flash for ROCK Pi 4A/B/C | expand |
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4a.dts b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4a.dts index d5df8939a..30e63e62a 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4a.dts +++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4a.dts @@ -19,6 +19,6 @@ &spi1 { flash@0 { compatible = "jedec,spi-nor"; reg = <0>; - spi-max-frequency = <10000000>; + spi-max-frequency = <50000000>; }; }; diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4b.dts b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4b.dts index bee6d7588..7122bf6c0 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4b.dts +++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4b.dts @@ -37,7 +37,7 @@ &spi1 { flash@0 { compatible = "jedec,spi-nor"; reg = <0>; - spi-max-frequency = <10000000>; + spi-max-frequency = <50000000>; }; }; diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4c.dts b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4c.dts index de2ebe4cb..8af75bc7c 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4c.dts +++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4c.dts @@ -49,7 +49,7 @@ &spi1 { flash@0 { compatible = "jedec,spi-nor"; reg = <0>; - spi-max-frequency = <10000000>; + spi-max-frequency = <50000000>; }; };
The ROCK Pi 4A/B/C boards come with a 32 Mbit SPI NOR flash chip (XTX Technology Limited XT25F32) which has a maximum clock frequency of 108 MHz. However, the Rockchip SPI controller driver limits the maximum SPI clock frequency to 50 MHz. Use this limit for spi-max-freq. This patch has been tested on ROCK Pi 4A. Signed-off-by: Stefan Nagy <stefan.nagy@ixypsilon.net> --- arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4a.dts | 2 +- arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4b.dts | 2 +- arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4c.dts | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-)