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Subject[PATCH 4/4] mmc: mmci: add hs200 support for stm32 sdmmc
Date
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: Ludovic Barre <ludovic.barre@foss.st.com>
Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
---
drivers/mmc/host/mmci_stm32_sdmmc.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/mmci_stm32_sdmmc.c b/drivers/mmc/host/mmci_stm32_sdmmc.c
index a75d3dd34d18..9c13f2c31365 100644
--- a/drivers/mmc/host/mmci_stm32_sdmmc.c
+++ b/drivers/mmc/host/mmci_stm32_sdmmc.c
@@ -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;
}
--
2.17.1
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