Hello! This is implementation of SDHCI CQE support for sdhci-of-dwcmshc driver. For enabling CQE support just set 'supports-cqe' in your DevTree file for appropriate mmc node. Also, while implementing CQE support for the driver, I faced with a problem which I will describe below. According to the IP block documentation CQE works only with "AMDA-2 only" mode which is activated only with v4 mode enabled. I see in dwcmshc_probe() function that v4 mode gets enabled only for 'sdhci_dwcmshc_bf3_pdata' platform data. So my question is: is it correct to enable v4 mode for all platform data if 'SDHCI_CAN_64BIT_V4' bit is set in hw? Because I`m afraid that enabling v4 mode for some platforms could break them down. On the other hand, if host controller says that it can do v4 (caps & SDHCI_CAN_64BIT_V4), lets do v4 or disable it manualy by some quirk. Anyway - RFC. Thanks in advance, Sergey. Sergey Khimich (1): mmc: sdhci-of-dwcmshc: Add CQE support drivers/mmc/host/Kconfig | 1 + drivers/mmc/host/sdhci-of-dwcmshc.c | 154 +++++++++++++++++++++++++++- 2 files changed, 154 insertions(+), 1 deletion(-) -- 2.30.2
