This is a note to let you know that I've just added the patch titled PCI: aardvark: Fix initialization with old Marvell's Arm Trusted Firmware to the 5.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: pci-aardvark-fix-initialization-with-old-marvell-s-arm-trusted-firmware.patch and it can be found in the queue-5.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From b0c6ae0f8948a2be6bf4e8b4bbab9ca1343289b6 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@xxxxxxxxxx> Date: Wed, 2 Sep 2020 16:43:44 +0200 Subject: 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 From: Pali Rohár <pali@xxxxxxxxxx> 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@xxxxxxxxx> Link: https://lore.kernel.org/r/20200902144344.16684-3-pali@xxxxxxxxxx Fixes: 366697018c9a ("PCI: aardvark: Add PHY support") Signed-off-by: Pali Rohár <pali@xxxxxxxxxx> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx> Reviewed-by: Rob Herring <robh@xxxxxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> # 5.8+: ea17a0f153af: phy: marvell: comphy: Convert internal SMCC firmware return codes to errno Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 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; } Patches currently in stable-queue which might be from pali@xxxxxxxxxx are queue-5.9/ata-ahci-mvebu-make-sata-phy-optional-for-armada-3720.patch queue-5.9/pci-aardvark-fix-initialization-with-old-marvell-s-arm-trusted-firmware.patch