Commit 36240ef8 authored by Yann Gautier's avatar Yann Gautier Committed by Ulf Hansson
Browse files

mmc: mmci: add hs200 support for stm32 sdmmc 



Use feedback clock for HS200 mode, as for SDR104.
The HS200 mode can be enabled through DT by using mmc-hs200-1_8v.
It is possible to use it on STM32MP13, but not STM32MP15 platforms.

Signed-off-by: default avatarLudovic Barre <ludovic.barre@foss.st.com>
Signed-off-by: default avatarYann Gautier <yann.gautier@foss.st.com>
Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20211215141727.4901-5-yann.gautier@foss.st.com


Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 4481ab60

drivers/mmc/host/mmci_stm32_sdmmc.c

+3 −2
Original line number Diff line number Diff line
@@ -241,11 +241,12 @@ static void mmci_sdmmc_set_clkreg(struct mmci_host *host, unsigned int desired) 


	/*

	 * SDMMC_FBCK is selected when an external Delay Block is needed

	 * with SDR104.

	 * with SDR104 or HS200.

	 */

	if (host->mmc->ios.timing >= MMC_TIMING_UHS_SDR50) {

		clk |= MCI_STM32_CLK_BUSSPEED;

		if (host->mmc->ios.timing == MMC_TIMING_UHS_SDR104) {

		if (host->mmc->ios.timing == MMC_TIMING_UHS_SDR104 ||

		    host->mmc->ios.timing == MMC_TIMING_MMC_HS200) {

			clk &= ~MCI_STM32_CLK_SEL_MSK;

			clk |= MCI_STM32_CLK_SELFBCK;

		}