[PATCH v3 4/7] usb: typec: tcpci_rt1711h: Add initial phy setting

Gene Chen
2022-08-01T10:27:38Z

From: Gene Chen <gene_chen@richtek.com>

Add initial phy setting about phy dicard retry,
rx filter deglitech 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 --git a/drivers/usb/typec/tcpm/tcpci_rt1711h.c b/drivers/usb/typec/tcpm/tcpci_rt1711h.c
index df7bfe299987..33d8ea95b7c1 100644
--- a/drivers/usb/typec/tcpm/tcpci_rt1711h.c
+++ b/drivers/usb/typec/tcpm/tcpci_rt1711h.c
@@ -20,6 +20,9 @@
#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 */
@@ -107,8 +110,18 @@ 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 deglitech 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,
--
2.25.1