[PATCH 1/3] dt-bindings: phy: mediatek: tphy: add support hardware version 3

From: Chunfeng Yun
Date: Fri Jun 04 2021 - 03:31:43 EST


The PHYA architecture is updated, and doesn't support slew rate
calibration anymore on 7nm or advanced process, add a new version
number to support it.
Note: the FreqMeter bank is not used but reserved.

Signed-off-by: Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx>
---
.../devicetree/bindings/phy/mediatek,tphy.yaml | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml b/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml
index b8a7651a3d9a..939c09296b5f 100644
--- a/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml
+++ b/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml
@@ -15,7 +15,7 @@ description: |
controllers on MediaTek SoCs, includes USB2.0, USB3.0, PCIe and SATA.

Layout differences of banks between T-PHY V1 (mt8173/mt2701) and
- T-PHY V2 (mt2712) when works on USB mode:
+ T-PHY V2 (mt2712) / V3 (mt8195) when works on USB mode:
-----------------------------------
Version 1:
port offset bank
@@ -34,7 +34,7 @@ description: |
u2 port2 0x1800 U2PHY_COM
...

- Version 2:
+ Version 2/3:
port offset bank
u2 port0 0x0000 MISC
0x0100 FMREG
@@ -59,7 +59,8 @@ description: |

SPLLC shared by u3 ports and FMREG shared by u2 ports on V1 are put back
into each port; a new bank MISC for u2 ports and CHIP for u3 ports are
- added on V2.
+ added on V2; the FMREG bank for slew rate calibration is not used anymore
+ and reserved on V3;

properties:
$nodename:
@@ -79,8 +80,11 @@ properties:
- mediatek,mt2712-tphy
- mediatek,mt7629-tphy
- mediatek,mt8183-tphy
- - mediatek,mt8195-tphy
- const: mediatek,generic-tphy-v2
+ - items:
+ - enum:
+ - mediatek,mt8195-tphy
+ - const: mediatek,generic-tphy-v3
- const: mediatek,mt2701-u3phy
deprecated: true
- const: mediatek,mt2712-u3phy
@@ -91,7 +95,7 @@ properties:
description:
Register shared by multiple ports, exclude port's private register.
It is needed for T-PHY V1, such as mt2701 and mt8173, but not for
- T-PHY V2, such as mt2712.
+ T-PHY V2/V3, such as mt2712.
maxItems: 1

"#address-cells":
--
2.18.0