Commit 261bbd46 authored by Philip Rakity's avatar Philip Rakity Committed by Chris Ball

mmc: core: eMMC signal voltage does not use CMD11

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: default avatarPhilip Rakity <prakity@marvell.com>
Reviewed-by: default avatarArindam Nath <arindam.nath@amd.com>
Signed-off-by: default avatarChris Ball <cjb@laptop.org>
parent 756515c6
......@@ -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;
......
......@@ -41,7 +41,8 @@ void mmc_set_bus_width(struct mmc_host *host, unsigned int width);
void mmc_set_bus_width_ddr(struct mmc_host *host, unsigned int width,
unsigned int ddr);
u32 mmc_select_voltage(struct mmc_host *host, u32 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);
void mmc_set_timing(struct mmc_host *host, unsigned int timing);
void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type);
......
......@@ -725,7 +725,7 @@ int mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid, u32 *rocr)
*/
if (!mmc_host_is_spi(host) && rocr &&
((*rocr & 0x41000000) == 0x41000000)) {
err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180);
err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180, true);
if (err) {
ocr &= ~SD_OCR_S18R;
goto try_again;
......@@ -1098,7 +1098,7 @@ int mmc_attach_sd(struct mmc_host *host)
WARN_ON(!host->claimed);
/* Make sure we are at 3.3V signalling voltage */
err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330);
err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, false);
if (err)
return err;
......
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