linux-kernel - [RFC PATCH 1/4] PCI: pcie-rockchip: add bits for Target Link Speed in LCS

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Message-ID: <aEQb5kEOCJNQJMin@geday>
Date: Sat, 7 Jun 2025 08:00:54 -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 <manivannan.sadhasivam@...aro.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>,
	linux-phy@...ts.infradead.org, linux-pci@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [RFC PATCH 1/4] PCI: pcie-rockchip: add bits for Target Link Speed
 in LCS_2

Link Control and Status Register 2 is not present in current
pcie-rockchip.h definitions. Add it in preparation for
setting it before Gen2 retraining.

Signed-off-by: Geraldo Nascimento <geraldogabriel@...il.com>
---
 drivers/pci/controller/pcie-rockchip.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/pci/controller/pcie-rockchip.h b/drivers/pci/controller/pcie-rockchip.h
index 14954f43e5e9..7a84899d3812 100644
--- a/drivers/pci/controller/pcie-rockchip.h
+++ b/drivers/pci/controller/pcie-rockchip.h
@@ -166,6 +166,9 @@
 #define   PCIE_RC_CONFIG_LINK_CAP_L0S		BIT(10)
 #define PCIE_RC_CONFIG_LCS		(PCIE_RC_CONFIG_BASE + 0xd0)
 #define PCIE_EP_CONFIG_LCS		(PCIE_EP_CONFIG_BASE + 0xd0)
+#define PCIE_RC_CONFIG_LCS_2		(PCIE_RC_CONFIG_BASE + 0xf0)
+#define   PCIE_RC_CONFIG_LCS_2_TLS_25	BIT(0)
+#define   PCIE_RC_CONFIG_LCS_2_TLS_50	BIT(1)
 #define PCIE_RC_CONFIG_L1_SUBSTATE_CTRL2 (PCIE_RC_CONFIG_BASE + 0x90c)
 #define PCIE_RC_CONFIG_THP_CAP		(PCIE_RC_CONFIG_BASE + 0x274)
 #define   PCIE_RC_CONFIG_THP_CAP_NEXT_MASK	GENMASK(31, 20)
-- 
2.49.0