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mmc: core: eMMC signal voltage does not use CMD11

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eMMC chips do not use CMD11 when changing voltage.  Add extra
argument to call to indicate if CMD11 needs to be sent.

Signed-off-by: Philip Rakity <prakity@marvell.com>
Reviewed-by: Arindam Nath <arindam.nath@amd.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Philip Rakity
2011-05-13 11:17:17 +05:30
committed by Chris Ball
parent 756515c626
commit 261bbd463a
3 changed files with 6 additions and 5 deletions
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4
drivers/mmc/core/core.c
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@@ -942,7 +942,7 @@ u32 mmc_select_voltage(struct mmc_host *host, u32 ocr)
return ocr;
}
int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage)
int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage, bool cmd11)
{
struct mmc_command cmd = {0};
int err = 0;
@@ -953,7 +953,7 @@ int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage)
* Send CMD11 only if the request is to switch the card to
* 1.8V signalling.
*/
if (signal_voltage == MMC_SIGNAL_VOLTAGE_180) {
if ((signal_voltage != MMC_SIGNAL_VOLTAGE_330) && cmd11) {
cmd.opcode = SD_SWITCH_VOLTAGE;
cmd.arg = 0;
cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;