From c52c90dbcb8c2676dab22cb21c0f0c5da527dfd3 Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Fri, 23 Jul 2021 16:22:40 +0800 Subject: [PATCH] dt-bindings: phy: mediatek: tphy: add support hardware version 3 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. Due to the FreqMeter bank is not used but reserved, it's backward with v2 until now. For mt8195, no function changes when use generic v2 or v3 compatible, but prefer to use v3's compatible, it will not waste the time to calibrate the slew rate, and also correspond with hardware version. Acked-by: Rob Herring Signed-off-by: Chunfeng Yun Link: https://lore.kernel.org/r/1627028562-23584-1-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Vinod Koul --- Documentation/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 ef9d9d4..838852c 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": -- 2.7.4