Register writes which change voltage of IO lines or turn the IO bus on/off require sdhc controller to be ready before progressing further. Once a register write which affects IO lines is done, the driver should wait for power irq from controller. Once the irq comes, the driver should acknowledge the irq by writing to power control register. If the acknowledgement is not given to controller, the controller may not complete the corresponding register write action and this can mess up the controller if drivers proceeds without power irq completing. Sahitya Tummala (2): mmc: sdhci-msm: Fix HW issue with power IRQ handling during reset mmc: sdhci-msm: Add support to wait for power irq Subhash Jadavani (1): mmc: sdhci-msm: fix issue with power irq Vijay Viswanath (2): mmc: sdhci-msm: Add ops to do sdhc register write defconfig: msm: Enable CONFIG_MMC_SDHCI_IO_ACCESSORS arch/arm64/configs/defconfig | 1 + drivers/mmc/host/sdhci-msm.c | 233 ++++++++++++++++++++++++++++++++++++++++++- 2 files changed, 229 insertions(+), 5 deletions(-) -- Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project. -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
