linux-kernel - [RFC PATCH v6 0/4] PCI: rockchip: Improve driver quality

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Message-ID: <cover.1750470187.git.geraldogabriel@gmail.com>
Date: Fri, 20 Jun 2025 22:47:51 -0300
From: Geraldo Nascimento <geraldogabriel@...il.com>
To: linux-rockchip@...ts.infradead.org
Cc: Shawn Lin <shawn.lin@...k-chips.com>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kw@...ux.com>,
	Manivannan Sadhasivam <mani@...nel.org>,
	Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
	Heiko Stuebner <heiko@...ech.de>, Vinod Koul <vkoul@...nel.org>,
	Kishon Vijay Abraham I <kishon@...nel.org>,
	Rick wertenbroek <rick.wertenbroek@...il.com>,
	linux-phy@...ts.infradead.org, linux-pci@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [RFC PATCH v6 0/4] PCI: rockchip: Improve driver quality

During a 30-day debugging-run fighting quirky PCIe devices on RK3399
some quality improvements began to take form and this is my attempt
at upstreaming it. It will ensure maximum chance of retraining to Gen2
5.0GT/s, on all four lanes and fix async strobe TEST_WRITE disablement.

---
V5 -> V6: reflow to 75 cols, use 5.0GTs instead of Gen2 nomenclature,
clarify strobe write adjustment and remove PHY_CFG_RD_MASK
V4 -> V5: fix build failure, reflow commit messages and also convert
registers for EP operation, all suggested by Ilpo
V3 -> V4: fix setting-up of TLS in Link Control and Status Register 2,
also adjust commit titles
V2 -> V3: correctly clean-up with standard PCIe defines as per Bjorn's
suggestion
V1 -> V2: use standard PCIe defines as suggested by Bjorn

Geraldo Nascimento (4):
  PCI: rockchip: Use standard PCIe defines
  PCI: rockchip: Set Target Link Speed before retraining
  phy: rockchip-pcie: Enable all four lanes if required
  phy: rockchip-pcie: Properly disable TEST_WRITE strobe signal

 drivers/pci/controller/pcie-rockchip-ep.c   |  4 +-
 drivers/pci/controller/pcie-rockchip-host.c | 48 +++++++++++----------
 drivers/pci/controller/pcie-rockchip.h      | 12 +-----
 drivers/phy/rockchip/phy-rockchip-pcie.c    | 15 +++----
 4 files changed, 36 insertions(+), 43 deletions(-)

-- 
2.49.0