UPSTREAM: PCI: rockchip: Mark RC as common clock architecture

[firefly-linux-kernel-4.4.55.git] / drivers / pci / host / pcie-rockchip.c

diff --git a/drivers/pci/host/pcie-rockchip.c b/drivers/pci/host/pcie-rockchip.c
index 7d16669b4e7203df4feb64f6245b3c7b932298d8..f204f8b60b00f9c63d50821a143dd09b9dd2f3e9 100644 (file)
--- a/drivers/pci/host/pcie-rockchip.c
+++ b/drivers/pci/host/pcie-rockchip.c
@@ -141,6 +141,7 @@
 #define   PCIE_RC_CONFIG_DCR_CPLS_SHIFT                26
 #define PCIE_RC_CONFIG_LCS             (PCIE_RC_CONFIG_BASE + 0xd0)
 #define   PCIE_RC_CONFIG_LCS_RETRAIN_LINK      BIT(5)
+#define   PCIE_RC_CONFIG_LCS_CCC               BIT(6)
 #define   PCIE_RC_CONFIG_LCS_LBMIE             BIT(10)
 #define   PCIE_RC_CONFIG_LCS_LABIE             BIT(11)
 #define   PCIE_RC_CONFIG_LCS_LBMS              BIT(30)
@@ -536,6 +537,11 @@ static int rockchip_pcie_init_port(struct rockchip_pcie *rockchip)
 
        rockchip_pcie_set_power_limit(rockchip);
 
+       /* Set RC's clock architecture as common clock */
+       status = rockchip_pcie_read(rockchip, PCIE_RC_CONFIG_LCS);
+       status |= PCIE_RC_CONFIG_LCS_CCC;
+       rockchip_pcie_write(rockchip, status, PCIE_RC_CONFIG_LCS);
+
        /* Enable Gen1 training */
        rockchip_pcie_write(rockchip, PCIE_CLIENT_LINK_TRAIN_ENABLE,
                            PCIE_CLIENT_CONFIG);