Hi Jaehoon,
On 2016/3/3 20:08, Jaehoon Chung wrote:
Hi Shawn,
On 03/03/2016 11:36 AM, Shawn Lin wrote:
This patch introduce cap-enhanced-strobe for platforms which
want to enable enhanced strobe function from DT if the mmc host
controller claims to support enhanced strobe.
I don't know why need to add the capability and property.
From my point, HS400-ES is a optional feature, so we should leave it
for people to decide whether to use it. Just as my controller supports
hs400, but I can't force all the people using my platform to use hs400?
That's why we add mmc-hs400-* in DT.
But maybe I can change the name to mmc-hs400es-* ?
[...]
#define MMC_CAP_DRIVER_TYPE_A (1 << 23) /* Host supports Driver Type A */
#define MMC_CAP_DRIVER_TYPE_C (1 << 24) /* Host supports Driver Type C */
#define MMC_CAP_DRIVER_TYPE_D (1 << 25) /* Host supports Driver Type D */
+#define MMC_CAP_ENHANCED_STROBE (1 << 20) /* Host supports enhanced strobe */
Need to fix ordering.
yeah~~ good catch!
#define MMC_CAP_CMD23 (1 << 30) /* CMD23 supported. */
#define MMC_CAP_HW_RESET (1 << 31) /* Hardware reset */
@@ -469,6 +470,11 @@ static inline int mmc_host_uhs(struct mmc_host *host)
MMC_CAP_UHS_DDR50);
}
+static inline int mmc_host_enhanced_strobe(struct mmc_host *host)
+{
+ return host->caps & MMC_CAP_ENHANCED_STROBE;
+}
+
static inline int mmc_host_packed_wr(struct mmc_host *host)
{
return host->caps2 & MMC_CAP2_PACKED_WR;
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--
Best Regards
Shawn Lin
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