On 15/08/23 13:29, Wenchao Chen wrote: > On Tue, Aug 15, 2023 at 2:21 PM Adrian Hunter <adrian.hunter@xxxxxxxxx> wrote: >> >> On 15/08/23 04:40, Wenchao Chen wrote: >>> Change in v2: >>> - add mmc_sd_switch() and mmc_send_status() to the header file >>> - split up core changes from host driver changes >>> - Use pr_debug instead of dev_info and dev_dbg >>> - Optimize the best sampled value algorithm >> >> What about hooking ->set_ios() as Ulf suggested? >> > > I've tried that, but it's not a good way to do it. > We found that sdhci_runtime_resume_host() calls ->set_ios, but we > don't want to do that. Given that sdhci_sprd_runtime_resume() calls sdhci_runtime_resume_host(), it should be possible to determine when to tune, right? > We just need SD HS mode tuning at mmc_sd_init_card(). > >>> >>> Wenchao Chen (2): >>> mmc: core: Add host specific tuning support for SD HS mode >>> mmc: sdhci-sprd: Add SD HS mode online tuning >>> >>> drivers/mmc/core/sd.c | 12 +++ >>> drivers/mmc/core/sd_ops.c | 1 + >>> drivers/mmc/host/sdhci-sprd.c | 152 ++++++++++++++++++++++++++++++++++ >>> include/linux/mmc/host.h | 8 ++ >>> 4 files changed, 173 insertions(+) >>> >>
