Re: [PATCH] mmc: sdhci_am654: Drop lookup for deprecated ti,otap-del-sel

Adrian Hunter
2023-11-20T12:08:26Z

On 10/11/23 09:25, Vignesh Raghavendra wrote:
> ti,otap-del-sel has been deprecated since v5.7 and there are no users of
> this property and no documentation in the DT bindings either.
> Drop the fallback code looking for this property, this makes
> sdhci_am654_get_otap_delay() much easier to read as all the TAP values
> can be handled via a single iterator loop.
>
> Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

One minor comment below, otherwise:

Acked-by: Adrian Hunter <adrian.hunter@intel.com>

> ---
>
> Based on discussions at [1]
> https://lore.kernel.org/linux-mmc/CAPDyKFrCSTW3G6H7qS89d+UQ6RJcAYcKSPULVT8J7XKsUDpHdw@mail.gmail.com/
>
> CC'ing DT maintainers to see if there any objection to remove
> undocumented and deprecated property.
>
> drivers/mmc/host/sdhci_am654.c | 25 ++++---------------------
> 1 file changed, 4 insertions(+), 21 deletions(-)
>
> diff --git a/drivers/mmc/host/sdhci_am654.c b/drivers/mmc/host/sdhci_am654.c
> index 967bd2dfcda1..402fba0fa418 100644
> --- a/drivers/mmc/host/sdhci_am654.c
> +++ b/drivers/mmc/host/sdhci_am654.c
> @@ -577,32 +577,15 @@ static int sdhci_am654_get_otap_delay(struct sdhci_host *host,
> int i;
> int ret;
>
> - ret = device_property_read_u32(dev, td[MMC_TIMING_LEGACY].otap_binding,
> - &sdhci_am654->otap_del_sel[MMC_TIMING_LEGACY]);
> - if (ret) {
> - /*
> - * ti,otap-del-sel-legacy is mandatory, look for old binding
> - * if not found.
> - */
> - ret = device_property_read_u32(dev, "ti,otap-del-sel",
> - &sdhci_am654->otap_del_sel[0]);
> - if (ret) {
> - dev_err(dev, "Couldn't find otap-del-sel\n");
> -
> - return ret;
> - }
> -
> - dev_info(dev, "Using legacy binding ti,otap-del-sel\n");
> - sdhci_am654->legacy_otapdly = true;

With this removal, legacy_otapdly is not used anymore and should be
removed also.

> -
> - return 0;
> - }
> -
> for (i = MMC_TIMING_LEGACY; i <= MMC_TIMING_MMC_HS400; i++) {
>
> ret = device_property_read_u32(dev, td[i].otap_binding,
> &sdhci_am654->otap_del_sel[i]);
> if (ret) {
> + if (i == MMC_TIMING_LEGACY) {
> + dev_err(dev, "Couldn't find mandatory ti,otap-del-sel-legacy\n");
> + return ret;
> + }
> dev_dbg(dev, "Couldn't find %s\n",
> td[i].otap_binding);
> /*