Hi Kevin,
On 03/08/2017 04:16 PM, Kevin Liu wrote:
> No need to flush cache for command without data.
>
> Signed-off-by: Kevin Liu <kevin...@asrmicro.com>
Applied on u-boot-mmc. Thanks!
Best Regards,
Jaehoon Chung
> ---
> drivers/mmc/sdhci.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
> index 93cefd8..c94d58d 100644
> --- a/drivers/mmc/sdhci.c
> +++ b/drivers/mmc/sdhci.c
> @@ -242,8 +242,10 @@ static int sdhci_send_command(struct mmc *mmc, struct
> mmc_cmd *cmd,
>
> sdhci_writel(host, cmd->cmdarg, SDHCI_ARGUMENT);
> #ifdef CONFIG_MMC_SDHCI_SDMA
> - trans_bytes = ALIGN(trans_bytes, CONFIG_SYS_CACHELINE_SIZE);
> - flush_cache(start_addr, trans_bytes);
> + if (data != 0) {
> + trans_bytes = ALIGN(trans_bytes, CONFIG_SYS_CACHELINE_SIZE);
> + flush_cache(start_addr, trans_bytes);
> + }
> #endif
> sdhci_writew(host, SDHCI_MAKE_CMD(cmd->cmdidx, flags), SDHCI_COMMAND);
> start = get_timer(0);
>
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