diff options
Diffstat (limited to 'drivers/ram/stm32mp1')
| -rw-r--r-- | drivers/ram/stm32mp1/stm32mp1_ddr.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/ram/stm32mp1/stm32mp1_ddr.c b/drivers/ram/stm32mp1/stm32mp1_ddr.c index caa7813..8200366 100644 --- a/drivers/ram/stm32mp1/stm32mp1_ddr.c +++ b/drivers/ram/stm32mp1/stm32mp1_ddr.c @@ -401,11 +401,9 @@ void stm32mp1_ddr_init(struct ddr_info *priv, */ clrbits_le32(priv->rcc + RCC_DDRITFCR, RCC_DDRITFCR_DDRCAPBRST); -/* 1.4. wait 4 cycles for synchronization */ - asm(" nop"); - asm(" nop"); - asm(" nop"); - asm(" nop"); +/* 1.4. wait 128 cycles to permit initialization of end logic */ + udelay(2); + /* for PCLK = 133MHz => 1 us is enough, 2 to allow lower frequency */ /* 1.5. initialize registers ddr_umctl2 */ /* Stop uMCTL2 before PHY is ready */ |