This is a revival of an earlier patch series from 2013 to add support for the PXA168 SDHC controller, with an additional SDIO IRQ errata fix. It also cleans up the clock naming to be consistent with the existing DT schema shared with the pxav3 driver (in a backwards-compatible way). Here is the original patch series this is based on: https://lore.kernel.org/linux-mmc/1363544206-3671-1-git-send-email-tanmay.upadhyay@xxxxxxxxxxxxxx/ Note that I left out the platform_specific_completion and clock gating changes from the original patches. They both seemed controversial, and don't seem necessary based on my testing. I've been running this code on a PXA168 for months without any issues. The SDIO IRQ workaround of sending a dummy CMD0 isn't pretty, but it works just as the errata said it would. Should I export sdhci_post_req and refer to it directly, rather than saving a pointer to it in this driver like I'm doing now? Or is there a cleaner way to send the dummy command after every SDIO command? It felt hacky, but I wasn't sure how else to do it. Doug Brown (8): mmc: sdhci-pxav2: add initial support for PXA168 V1 controller mmc: sdhci-pxav2: enable CONFIG_MMC_SDHCI_IO_ACCESSORS mmc: sdhci-pxav2: add register workaround for PXA168 silicon bug mmc: sdhci-pxav2: change clock name to match DT bindings mmc: sdhci-pxav2: add optional core clock mmc: sdhci-pxav2: add SDIO card IRQ workaround for PXA168 V1 controller mmc: sdhci-pxav2: add optional pinctrl for SDIO IRQ workaround dt-bindings: mmc: sdhci-pxa: add pxav1 .../devicetree/bindings/mmc/sdhci-pxa.yaml | 22 ++- drivers/mmc/host/Kconfig | 1 + drivers/mmc/host/sdhci-pxav2.c | 138 +++++++++++++++++- 3 files changed, 154 insertions(+), 7 deletions(-) -- 2.34.1
