diff options
Diffstat (limited to 'target/linux/mvebu/patches-5.4/026-PCI-aardvark-Fix-initialization-with-old-Marvell-s-A.patch')
| -rw-r--r-- | target/linux/mvebu/patches-5.4/026-PCI-aardvark-Fix-initialization-with-old-Marvell-s-A.patch | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/target/linux/mvebu/patches-5.4/026-PCI-aardvark-Fix-initialization-with-old-Marvell-s-A.patch b/target/linux/mvebu/patches-5.4/026-PCI-aardvark-Fix-initialization-with-old-Marvell-s-A.patch new file mode 100644 index 0000000000..bb9d7b7849 --- /dev/null +++ b/target/linux/mvebu/patches-5.4/026-PCI-aardvark-Fix-initialization-with-old-Marvell-s-A.patch @@ -0,0 +1,44 @@ +From b0c6ae0f8948a2be6bf4e8b4bbab9ca1343289b6 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@kernel.org> +Date: Wed, 2 Sep 2020 16:43:44 +0200 +Subject: [PATCH] PCI: aardvark: Fix initialization with old Marvell's Arm + Trusted Firmware +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +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 +--- + 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 +@@ -1123,7 +1123,9 @@ 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; + } |