2022-08-05 07:21:30

by Gene Chen

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

From: Gene Chen <[email protected]>

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

Signed-off-by: Gene Chen <[email protected]>
Reviewed-by: Guenter Roeck <[email protected]>
---
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 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,
--
2.7.4

2022-08-08 11:04:47

by Heikki Krogerus

Subject: Re: [PATCH v4 4/7] usb: typec: tcpci_rt1711h: Add initial phy setting

On Fri, Aug 05, 2022 at 03:17:10PM +0800, Gene Chen wrote:
> From: Gene Chen <[email protected]>
>
> Add initial phy setting about phy dicard retry,
> rx filter deglitch time and BMC-encoded wait time
>
> Signed-off-by: Gene Chen <[email protected]>
> Reviewed-by: Guenter Roeck <[email protected]>

Reviewed-by: Heikki Krogerus <[email protected]>

> ---
> 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 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,
> --
> 2.7.4

--
heikki