From: Pali Rohár pali@kernel.org
commit b0c6ae0f8948a2be6bf4e8b4bbab9ca1343289b6 upstream.
Old ATF automatically power on pcie phy and does not provide SMC call for phy power on functionality which leads to aardvark initialization failure:
[ 0.330134] mvebu-a3700-comphy d0018300.phy: unsupported SMC call, try updating your firmware [ 0.338846] phy phy-d0018300.phy.1: phy poweron failed --> -95 [ 0.344753] advk-pcie d0070000.pcie: Failed to initialize PHY (-95) [ 0.351160] advk-pcie: probe of d0070000.pcie failed with error -95
This patch fixes above failure by ignoring 'not supported' error in aardvark driver. In this case it is expected that phy is already power on.
Tested-by: Tomasz Maciej Nowak tmn505@gmail.com Link: https://lore.kernel.org/r/20200902144344.16684-3-pali@kernel.org Fixes: 366697018c9a ("PCI: aardvark: Add PHY support") Signed-off-by: Pali Rohár pali@kernel.org Signed-off-by: Lorenzo Pieralisi lorenzo.pieralisi@arm.com Reviewed-by: Rob Herring robh@kernel.org Cc: stable@vger.kernel.org # 5.8+: ea17a0f153af: phy: marvell: comphy: Convert internal SMCC firmware return codes to errno Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/pci/controller/pci-aardvark.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/pci/controller/pci-aardvark.c +++ b/drivers/pci/controller/pci-aardvark.c @@ -1076,7 +1076,9 @@ static int advk_pcie_enable_phy(struct a }
ret = phy_power_on(pcie->phy); - if (ret) { + if (ret == -EOPNOTSUPP) { + dev_warn(&pcie->pdev->dev, "PHY unsupported by firmware\n"); + } else if (ret) { phy_exit(pcie->phy); return ret; }