diff options
| author | Clark Wang <xiaoning.wang@nxp.com> | 2019-01-03 17:54:11 +0800 |
|---|---|---|
| committer | Jason Liu <jason.hui.liu@nxp.com> | 2019-02-12 10:35:58 +0800 |
| commit | 3bac5a4c8ccfacb8cb31ae029ba7e7671c0e4574 (patch) | |
| tree | f47b4055828b124ffea65c9eb5d97a194164e3b3 /arch/arm | |
| parent | a1204e3b0e7ad1a28b4422b0df01be16ff3a0c4a (diff) | |
MLK-20060-6 dts: lpspi: Prevent CS line error in slave mode
Prevent cs line configuration error in slave mode.
If master mode uses cs-gpio configuration, it should be changed into
non-gpio for CS line in slave mode. Otherwise, slave will receive several
0xFF at the beginning of one transfer especially in dma mode.
Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
Acked-by: Fugang Duan <Fugang.duan@nxp.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/boot/dts/imx7ulp-evk-spi-slave.dts | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/imx7ulp-evk-spi-slave.dts b/arch/arm/boot/dts/imx7ulp-evk-spi-slave.dts index 728f91ebab5b..217f5b83395e 100644 --- a/arch/arm/boot/dts/imx7ulp-evk-spi-slave.dts +++ b/arch/arm/boot/dts/imx7ulp-evk-spi-slave.dts @@ -11,6 +11,18 @@ /delete-node/&spidev0; +&pinctrl_lpspi3 { + fsl,pins = < + IMX7ULP_PAD_PTF16__LPSPI3_SIN 0x0 + IMX7ULP_PAD_PTF17__LPSPI3_SOUT 0x0 + IMX7ULP_PAD_PTF18__LPSPI3_SCK 0x0 + IMX7ULP_PAD_PTF19__LPSPI3_PCS0 0x0 + >; +}; + &lpspi3 { + pinctrl-0 = <&pinctrl_lpspi3>; + pinctrl-1 = <&pinctrl_lpspi3>; + /delete-property/ cs-gpios; spi-slave; }; |