17 Nov
2018
17 Nov
'18
2:32 p.m.
On Thu, Oct 18, 2018 at 04:16:46PM +0200, Anatolij Gustschin wrote:
From: Ye Li ye.li@nxp.com
The pca953x_gpio driver uses default value of polarity inversion register. For some devices like PCA9557 and MAX7310, their polarity inversion register default value is 0xf0. So for high 4 ports, when reading their values, the values are inverted as the actual level.
This patch clears the polarity inversion register to 0 at init, so that the port read and write values are aligned.
Signed-off-by: Ye Li ye.li@nxp.com Acked-by: Fugang Duan fugang.duan@nxp.com Acked-by: Peng Fan peng.fan@nxp.com Signed-off-by: Anatolij Gustschin agust@denx.de
Applied to u-boot/master, thanks!
--
Tom