Re: [PATCH v6 01/11] usb: ch9: Add USB 3.2 SSP attributes

Felipe Balbi wrote:

Thinh Nguyen [off-list ref] writes:

quoted

In preparation for USB 3.2 dual-lane support, add sublink speed
attribute macros and enum usb_ssp_rate. A USB device that operates in
SuperSpeed Plus may operate at different speed and lane count. These
additional macros and enum values help specifying that.

Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
---
Changes in v6:
- Rebase on Greg's usb-testing branch
- Convert the sublink speed attribute enum to macros and move it to uapi
- Remove usb_sublink_speed struct
- To simplify things, use usb_ssp_rate enum to specify the signaling rate
  generation and lane count
- Update commit message
Changes in v5:
- Rebase on Felipe's testing/next branch
- Changed Signed-off-by email to match From: email header
Changes in v4:
- None
Changes in v3:
- None
Changes in v2:
- Move to include/linux/usb/ch9.h instead of under uapi

 include/linux/usb/ch9.h      |  9 +++++++++
 include/uapi/linux/usb/ch9.h | 13 +++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h
index 604c6c514a50..86c50907634e 100644
--- a/include/linux/usb/ch9.h
+++ b/include/linux/usb/ch9.h

@@ -36,6 +36,15 @@
 #include <linux/device.h>
 #include <uapi/linux/usb/ch9.h>
 
+/* USB 3.2 SuperSpeed Plus phy signaling rate generation and lane count */
+
+enum usb_ssp_rate {
+	USB_SSP_GEN_UNKNOWN = 0,
+	USB_SSP_GEN_2x1,
+	USB_SSP_GEN_1x2,
+	USB_SSP_GEN_2x2,
+};

note that xHCI has some private definitions for USB 3.2 support. Maybe
add a patch converting xHCI to the generic versions?

Should it be part of this series? I plan to do that after this series is
merged to help minimize the review effort.

Thanks,
Thinh