mmc: core: HS200 mode support for eMMC 4.5
This patch adds the support of the HS200 bus speed for eMMC 4.5 devices.
The eMMC 4.5 devices have support for 200MHz bus speed. The function
prototype of the tuning function is modified to handle the tuning
command number which is different in sd and mmc case.
Change-Id: If52eab150592d96adb58d98ec19110fe43d2fbc0
Signed-off-by: Girish K S <girish.shivananjappa@linaro.org>
Signed-off-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
[subhashj@codeaurora.org: Fixed merge conflicts and compilation errors]
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 35137d6..73a68c9 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -56,12 +56,15 @@
#define MMC_TIMING_UHS_SDR50 3
#define MMC_TIMING_UHS_SDR104 4
#define MMC_TIMING_UHS_DDR50 5
+#define MMC_TIMING_MMC_HS200 6
unsigned char ddr; /* dual data rate used */
#define MMC_SDR_MODE 0
#define MMC_1_2V_DDR_MODE 1
#define MMC_1_8V_DDR_MODE 2
+#define MMC_1_2V_SDR_MODE 3
+#define MMC_1_8V_SDR_MODE 4
unsigned char signal_voltage; /* signalling voltage (1.8V or 3.3V) */
@@ -147,7 +150,9 @@
void (*init_card)(struct mmc_host *host, struct mmc_card *card);
int (*start_signal_voltage_switch)(struct mmc_host *host, struct mmc_ios *ios);
- int (*execute_tuning)(struct mmc_host *host);
+
+ /* The tuning command opcode value is different for SD and eMMC cards */
+ int (*execute_tuning)(struct mmc_host *host, u32 opcode);
void (*enable_preset_value)(struct mmc_host *host, bool enable);
void (*hw_reset)(struct mmc_host *host);
};
@@ -239,7 +244,10 @@
#define MMC_CAP2_CACHE_CTRL (1 << 1) /* Allow cache control */
#define MMC_CAP2_POWEROFF_NOTIFY (1 << 2) /* Notify poweroff supported */
#define MMC_CAP2_NO_MULTI_READ (1 << 3) /* Multiblock reads don't work */
-
+#define MMC_CAP2_HS200_1_8V_SDR (1 << 5) /* can support */
+#define MMC_CAP2_HS200_1_2V_SDR (1 << 6) /* can support */
+#define MMC_CAP2_HS200 (MMC_CAP2_HS200_1_8V_SDR | \
+ MMC_CAP2_HS200_1_2V_SDR)
mmc_pm_flag_t pm_caps; /* supported pm features */
unsigned int power_notify_type;
#define MMC_HOST_PW_NOTIFY_NONE 0