Hi Peter,
On 2022/2/22 09:31, Peter Geis wrote:
Rockchip emmc devices have a similar issue to Rockchip dwmmc devices, where performing dma to sram causes errors with suspend/resume. Allow us to toggle sdma in spl for sdhci similar to adma support, so we can ensure dma is not used when loading the sram code.
Signed-off-by: Peter Geis pgwipeout@gmail.com
Reviewed-by: Kever Yang kever.yang@rock-chips.com
Thanks, - Kever
drivers/mmc/Kconfig | 7 +++++++ drivers/mmc/sdhci.c | 6 +++--- 2 files changed, 10 insertions(+), 3 deletions(-)
diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig index f04cc44e1973..1e4342285ce7 100644 --- a/drivers/mmc/Kconfig +++ b/drivers/mmc/Kconfig @@ -468,6 +468,13 @@ config MMC_SDHCI_SDMA This enables support for the SDMA (Single Operation DMA) defined in the SD Host Controller Standard Specification Version 1.00 .
+config SPL_MMC_SDHCI_SDMA
- bool "Support SDHCI SDMA in SPL"
- depends on MMC_SDHCI
- help
This enables support for the SDMA (Single Operation DMA) definedin the SD Host Controller Standard Specification Version 1.00 in SPL.- config MMC_SDHCI_ADMA bool "Support SDHCI ADMA2" depends on MMC_SDHCI
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index 766e4a6b0c5e..6285e53d12a2 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -70,7 +70,7 @@ static void sdhci_transfer_pio(struct sdhci_host *host, struct mmc_data *data) } }
-#if (defined(CONFIG_MMC_SDHCI_SDMA) || CONFIG_IS_ENABLED(MMC_SDHCI_ADMA)) +#if (CONFIG_IS_ENABLED(MMC_SDHCI_SDMA) || CONFIG_IS_ENABLED(MMC_SDHCI_ADMA)) static void sdhci_prepare_dma(struct sdhci_host *host, struct mmc_data *data, int *is_aligned, int trans_bytes) { @@ -177,7 +177,7 @@ static int sdhci_transfer_data(struct sdhci_host *host, struct mmc_data *data) } } while (!(stat & SDHCI_INT_DATA_END));
-#if (defined(CONFIG_MMC_SDHCI_SDMA) || CONFIG_IS_ENABLED(MMC_SDHCI_ADMA)) +#if (CONFIG_IS_ENABLED(MMC_SDHCI_SDMA) || CONFIG_IS_ENABLED(MMC_SDHCI_ADMA)) dma_unmap_single(host->start_addr, data->blocks * data->blocksize, mmc_get_dma_dir(data)); #endif @@ -836,7 +836,7 @@ int sdhci_setup_cfg(struct mmc_config *cfg, struct sdhci_host *host, #endif debug("%s, caps: 0x%x\n", __func__, caps);
-#ifdef CONFIG_MMC_SDHCI_SDMA +#if CONFIG_IS_ENABLED(MMC_SDHCI_SDMA) if ((caps & SDHCI_CAN_DO_SDMA)) { host->flags |= USE_SDMA; } else {