On Fri, Aug 24, 2018 at 12:07:39AM +0800, Ming Huang wrote: > During the period of I2c accessing, if the board is reset > unexpectedly, and because the I2c client can not reset, > the SDA will be always pull down, then it cause I2C bus > Exception. > > Follow the Hi1620 I2C FS chapter 1.8.2 design, add I2C > Bus Exception handle function. It will Config SCL and SDA > to GPIO, and set the reversal frequency of SCL to 10KHz. > > The implementation of functions is in edk2-non-osi. > > Contributed-under: TianoCore Contribution Agreement 1.1 > Signed-off-by: Ming Huang <ming.hu...@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindh...@linaro.org> > --- > Silicon/Hisilicon/Include/Library/PlatformSysCtrlLib.h | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/Silicon/Hisilicon/Include/Library/PlatformSysCtrlLib.h > b/Silicon/Hisilicon/Include/Library/PlatformSysCtrlLib.h > index 3ccfc6bee3..a232e52ed7 100644 > --- a/Silicon/Hisilicon/Include/Library/PlatformSysCtrlLib.h > +++ b/Silicon/Hisilicon/Include/Library/PlatformSysCtrlLib.h > @@ -106,4 +106,7 @@ VOID DisableClusterClock(UINTN CpuClusterBase); > VOID EnableClusterClock(UINTN CpuClusterBase); > VOID DisableSocketClock (UINT8 Skt); > > +EFI_STATUS EFIAPI HandleI2CException (UINT32 Socket, UINT32 Port); > +EFI_STATUS EFIAPI HandleI2CExceptionBySocket (UINT32 Socket); > + > #endif > -- > 2.18.0 > _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
