Eric Lee / smarc-uboot

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Commit 901f6950a482d11849b7c748eaef7bda010e91dc

Authored by Patrick Delaunay
Committed by Marek Vasut
1 parent e1904abc1b
Exists in smarc_8mq_lf_v2020.04 and in 9 other branches 8qm-imx_v2020.04_5.4.70_2.3.0, emb_lf_v2022.04, pitx_8mp_lf_v2020.04, smarc-8m-android-10.0.0_2.6.0, smarc-8m-android-11.0.0_2.0.0, smarc-8mp-android-11.0.0_2.0.0, smarc_8mm-imx_v2020.04_5.4.24_2.1.0, smarc_8mp_lf_v2020.04, smarc_8mq-imx_v2020.04_5.4.24_2.1.0

phy: usbphyc: increase PLL wait timeout 

wait 200us to solve USB init issue on device mode
(ums and stm32prog commands)

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

Showing 1 changed file with 4 additions and 6 deletions Side-by-side Diff

drivers/phy/phy-stm32-usbphyc.c
Diff comments   View file @ 901f695
... ... @@ -37,7 +37,8 @@
37 37  
38 38 #define MAX_PHYS 2
39 39  
40   -#define PLL_LOCK_TIME_US 100
  40 +/* max 100 us for PLL lock and 100 us for PHY init */
  41 +#define PLL_INIT_TIME_US 200
41 42 #define PLL_PWR_DOWN_TIME_US 5
42 43 #define PLL_FVCO 2880 /* in MHz */
43 44 #define PLL_INFF_MIN_RATE 19200000 /* in Hz */
... ... @@ -177,11 +178,8 @@
177 178  
178 179 setbits_le32(usbphyc->base + STM32_USBPHYC_PLL, PLLEN);
179 180  
180   - /*
181   - * We must wait PLL_LOCK_TIME_US before checking that PLLEN
182   - * bit is still set
183   - */
184   - udelay(PLL_LOCK_TIME_US);
  181 + /* We must wait PLL_INIT_TIME_US before using PHY */
  182 + udelay(PLL_INIT_TIME_US);
185 183  
186 184 if (!(readl(usbphyc->base + STM32_USBPHYC_PLL) & PLLEN))
187 185 return -EIO;