[U-Boot] [PATCH v2 08/20] phy: marvell: a3700: Set USB3 RX wait depending on ref clock

Marek BehĂșn marek.behun at nic.cz
Tue Apr 24 15:21:19 UTC 2018


According to specification, CFG_PM_RXDLOZ_WAIT should be set to 0x7
when reference clock is at 25 MHz. The specification (at least the
version I have) does not mentoin the setting for 40 MHz reference
clock, but Marvell's U-Boot sets 0xC in that case.

Signed-off-by: Marek Behun <marek.behun at nic.cz>
Reviewed-by: Stefan Roese <sr at denx.de>
---
 drivers/phy/marvell/comphy_a3700.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/phy/marvell/comphy_a3700.c b/drivers/phy/marvell/comphy_a3700.c
index bcfe89e636..82dffc4f83 100644
--- a/drivers/phy/marvell/comphy_a3700.c
+++ b/drivers/phy/marvell/comphy_a3700.c
@@ -383,20 +383,18 @@ static int comphy_usb3_power_up(u32 lane, u32 type, u32 speed, u32 invert)
 	/*
 	 * 3. Check crystal jumper setting and program the Power and PLL
 	 * Control accordingly
+	 * 4. Change RX wait
 	 */
 	if (get_ref_clk() == 40) {
 		/* 40 MHz */
 		usb3_reg_set16(PWR_PLL_CTRL, 0xFCA3, 0xFFFF, lane);
+		usb3_reg_set16(PWR_MGM_TIM1, 0x10C, 0xFFFF, lane);
 	} else {
 		/* 25 MHz */
 		usb3_reg_set16(PWR_PLL_CTRL, 0xFCA2, 0xFFFF, lane);
+		usb3_reg_set16(PWR_MGM_TIM1, 0x107, 0xFFFF, lane);
 	}
 
-	/*
-	 * 4. Change RX wait
-	 */
-	usb3_reg_set16(PWR_MGM_TIM1, 0x10C, 0xFFFF, lane);
-
 	/*
 	 * 5. Enable idle sync
 	 */
-- 
2.16.1



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