From d456dfbaa0d8e43991791723cbcd0b9def95fd8d Mon Sep 17 00:00:00 2001 From: Siew Chin Lim Date: Thu, 24 Dec 2020 18:21:03 +0800 Subject: mmc: dwmmc: Change designware MMC 'clksel' callback function to return status Change 'clksel' callback function to allow the code to return a status. This patch is a preparation for enabling Arm-Trusted-Firmware (ATF) in Intel SoC FPGA. This patch does not change functionality. When using Arm-Trusted-Firmware (ATF) in Intel SoC FPGA, the MMC clock related register is secure register which is required to be written via SMC/PCSI call. It is possible that U-Boot fail to write the register if there is unexpected error between U-Boot and ATF. As a result, there maybe signal integrity on MMC connection due to clock. So, the code should reports error to user when 'clksel' fail. Signed-off-by: Siew Chin Lim --- include/dwmmc.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/dwmmc.h b/include/dwmmc.h index 51ab74ead35..5fc8ed8395f 100644 --- a/include/dwmmc.h +++ b/include/dwmmc.h @@ -174,7 +174,7 @@ struct dwmci_host { struct mmc *mmc; void *priv; - void (*clksel)(struct dwmci_host *host); + int (*clksel)(struct dwmci_host *host); void (*board_init)(struct dwmci_host *host); /** -- cgit v1.2.3