On 4/28/2020 5:26 AM, Chun-Hung Wu wrote:
Parse CQE bindings "supports-cqe" and "disable-cqe-dcmd" in mmc_of_parse(). Signed-off-by: Chun-Hung Wu <chun-hung.wu@xxxxxxxxxxxx> --- drivers/mmc/core/host.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index c876872..47521c6 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -302,6 +302,11 @@ int mmc_of_parse(struct mmc_host *host) host->caps2 |= MMC_CAP2_NO_SD; if (device_property_read_bool(dev, "no-mmc")) host->caps2 |= MMC_CAP2_NO_MMC; + if (device_property_read_bool(dev, "supports-cqe")) + host->caps2 |= MMC_CAP2_CQE;
This change is breaking emmc driver on qcom platforms where this dt property is defined.
[ 1.543453] cqhci_deactivate+0xc/0x38 [ 1.545627] sdhci_msm_reset+0x40/0x58 [ 1.549447] sdhci_do_reset+0x48/0x7c [ 1.553180] __sdhci_read_caps+0x7c/0x214 [ 1.556913] sdhci_setup_host+0x58/0xce8 [ 1.560905] sdhci_msm_probe+0x588/0x8a4 [ 1.564900] platform_drv_probe+0x4c/0xb0 So, we cant have this flag defined before sdhci_setup_host(). I will have to clear this cap and re-enable it in our initialization.
+ if (!device_property_read_bool(dev, "disable-cqe-dcmd")) { + host->caps2 |= MMC_CAP2_CQE_DCMD; + }/* Must be after "non-removable" check */if (device_property_read_u32(dev, "fixed-emmc-driver-type", &drv_type) == 0) {
