diff mbox series

[v4,4/7] usb: typec: tcpci_rt1711h: Add initial phy setting

Message ID 20220805071714.150882-5-gene.chen.richtek@gmail.com
State New
Headers show
Series usb: typec: tcpci_rt1711h: Add compatible with rt1715 | expand

Commit Message

Gene Chen Aug. 5, 2022, 7:17 a.m. UTC 
From: Gene Chen <gene_chen@richtek.com>

Add initial phy setting about phy dicard retry,
rx filter deglitch time and BMC-encoded wait time

Signed-off-by: Gene Chen <gene_chen@richtek.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
---
 drivers/usb/typec/tcpm/tcpci_rt1711h.c | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/usb/typec/tcpm/tcpci_rt1711h.c b/drivers/usb/typec/tcpm/tcpci_rt1711h.c
index fb19d7b..5c51d04 100644
--- a/drivers/usb/typec/tcpm/tcpci_rt1711h.c
+++ b/drivers/usb/typec/tcpm/tcpci_rt1711h.c
@@ -19,6 +19,9 @@ 
 #define RT1711H_VID		0x29CF
 #define RT1711H_PID		0x1711
 
+#define RT1711H_PHYCTRL1	0x80
+#define RT1711H_PHYCTRL2	0x81
+
 #define RT1711H_RTCTRL8		0x9B
 
 /* Autoidle timeout = (tout * 2 + 1) * 6.4ms */
@@ -106,8 +109,18 @@  static int rt1711h_init(struct tcpci *tcpci, struct tcpci_data *tdata)
 		return ret;
 
 	/* dcSRC.DRP : 33% */
-	return rt1711h_write16(chip, RT1711H_RTCTRL16, 330);
+	ret = rt1711h_write16(chip, RT1711H_RTCTRL16, 330);
+	if (ret < 0)
+		return ret;
+
+	/* Enable phy discard retry, retry count 7, rx filter deglitch 100 us */
+	ret = rt1711h_write8(chip, RT1711H_PHYCTRL1, 0xF1);
+	if (ret < 0)
+		return ret;
 
+	/* Decrease wait time of BMC-encoded 1 bit from 2.67us to 2.55us */
+	/* wait time : (val * .4167) us */
+	return rt1711h_write8(chip, RT1711H_PHYCTRL2, 62);
 }
 
 static int rt1711h_set_vbus(struct tcpci *tcpci, struct tcpci_data *tdata,