yair/u-boot-tk1-som
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

mmc: omap_hsmmc: Update pbias programming

Browse Source 
Update pbias programming sequence for OMAP5 ES2.0/DRA7

Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
This commit is contained in:
Balaji T K
2013-06-06 05:04:32 +00:00
committed by Tom Rini
parent 81ede187c3
commit a5d439c2d3
4 changed files with 14 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/mmc/omap_hsmmc.c
View File

@@ -113,23 +113,21 @@ static void omap5_pbias_config(struct mmc *mmc)
u32 value = 0;
value = readl((*ctrl)->control_pbias);
value &= ~(SDCARD_PWRDNZ | SDCARD_BIAS_PWRDNZ);
value |= SDCARD_BIAS_HIZ_MODE;
value &= ~SDCARD_PWRDNZ;
writel(value, (*ctrl)->control_pbias);
udelay(10); /* wait 10 us */
value &= ~SDCARD_BIAS_PWRDNZ;
writel(value, (*ctrl)->control_pbias);
palmas_mmc1_poweron_ldo();
value = readl((*ctrl)->control_pbias);
value &= ~SDCARD_BIAS_HIZ_MODE;
value |= SDCARD_PBIASLITE_VMODE | SDCARD_PWRDNZ | SDCARD_BIAS_PWRDNZ;
value |= SDCARD_BIAS_PWRDNZ;
writel(value, (*ctrl)->control_pbias);
value = readl((*ctrl)->control_pbias);
if (value & (1 << 23)) {
value &= ~(SDCARD_PWRDNZ | SDCARD_BIAS_PWRDNZ);
value |= SDCARD_BIAS_HIZ_MODE;
writel(value, (*ctrl)->control_pbias);
}
udelay(150); /* wait 150 us */
value |= SDCARD_PWRDNZ;
writel(value, (*ctrl)->control_pbias);
udelay(150); /* wait 150 us */
}
#endif