u-boot.git/drivers/pci, branch v2020.10

Merge https://gitlab.denx.de/u-boot/custodians/u-boot-fsl-qoriq

2020-09-25T16:55:06Z

- Bug fixes related to PCIe, pfe, xfi, gpio, reset, vid, env, and usb on layerscape products

pci: layerscape: Fixup PCIe EP mode DT nodes for LX2160A rev2

2020-09-24T15:27:32Z

LX2160A rev2 uses different PCIe controller, so EP mode DT nodes also need to be fixed up. Signed-off-by: Hou Zhiqiang Reviewed-by: Priyanka Jain

arm64: a37xx: pci: Disable link training when unloading driver

2020-09-24T08:14:06Z

As required by PCI Express spec a delay for at least 100ms after de-asserting PERST# signal is needed before link training is enabled. Linux kernels prior to 5.8 version do not automatically disable link training before de-asserting PERST# signal, therefore this requirement is not fulfilled. Above requirement is needed for proper detection of some Compex PCIe WiFi cards. Otherwise Linux kernel cannot detect it. To allow using those PCIe cards with older Linux kernel versions booted by U-Boot compiled with U-Boot a37xx pci driver, disable link training in U-Boot when unloading this pci driver. Thanks to DM_FLAG_OS_PREPARE flag, U-Boot automatically unload this driver when booting Linux kernel. Signed-off-by: Pali Rohár Reviewed-by: Stefan Roese

pci: layerscape: Fix spurious writes and panic

2020-09-23T14:03:44Z

The fdt_fixup_pcie_ls() scans all PCI devices and assumes that all PCI root devices are layerscape PCIe controllers. Unfortunately, this is not true for the LS1028A. There is one additional static PCI root complex (this contains the networking devices) which has nothing to do with the layerscape PCIe controllers. On recent U-Boot versions this results in the following panic: "Synchronous Abort" handler, esr 0x96000044 elr: 000000009602fa04 lr : 000000009602f9f4 (reloc) elr: 00000000fbd73a04 lr : 00000000fbd739f4 x0 : 0080000002000101 x1 : 0000000000000000 x2 : 00000000fbde9000 x3 : 0000000000000001 x4 : 0000000000000000 x5 : 0000000000000030 x6 : 00000000fbdbd460 x7 : 00000000fbb3d3a0 x8 : 0000000000000002 x9 : 000000000000000c x10: 00000000ffffffe8 x11: 0000000000000006 x12: 000000000001869f x13: 0000000000000a2c x14: 00000000fbb3d2cc x15: 00000000ffffffff x16: 0000000000010000 x17: 0000000000000000 x18: 00000000fbb3fda0 x19: 0000000000000800 x20: 0000000000000000 x21: 00000001f0000000 x22: 0000000000000800 x23: 0000000000000009 x24: 00000000fbdc3c1b x25: 00000000fbdc28e5 x26: 00000000fbdcc008 x27: 00000000fbdc16e2 x28: 000000000f000000 x29: 00000000fbb3d3a0 Code: 394072a1 f94006a0 34000041 5ac00a94 (b8336814) Resetting CPU ... This bug already existed in former versions, but the spurious write was never trapped, because the destination address was a valid address (by pure luck). Make sure the PCI root is actually one of the expected PCIe layerscape controllers by matching its compatible string. Signed-off-by: Michael Walle Reviewed-by: Vladimir Oltean Tested-by: Heiko Thiery Reviewed-by: Priyanka Jain

PCI: mediatek: Release the resource when PCIe enable port fail

2020-09-10T19:32:09Z

On the mt7623 platform, if one port enable fail and other port enable succeed. It will hang on when using pci enum because the resource was not released correctly. Signed-off-by: Chuanjia Liu Tested-by: Frank Wunderlich

arm64: a37xx: pci: Depends on DM_GPIO

2020-08-31T12:45:53Z

For proper initialization of aardvark pci driver it is required to de-assert reset GPIO. So depeneds on DM_GPIO option. Signed-off-by: Pali Rohár Reviewed-by: Stefan Roese Tested-by: Andre Heider

arm64: a37xx: pci: Assert PERST# signal when unloading driver

2020-08-31T12:45:53Z

This change ensures that PCIe card is put into reset state when U-Boot stops using it. DM_FLAG_OS_PREPARE ensures that U-Boot executes driver's remove callback prior booting Linux kernel. Linux kernel pci-aardvark driver needs to reset PCIe card via PERST# signal prior initializing it. If it does not issue reset then some PCIe cards (specially Compex WiFi cards) are not detected at all. Putting PCIe card into reset state prior booting Linux kernel would ensure that card would be properly reset at time when Linux kernel starts initializing pci-aardvark driver. Signed-off-by: Pali Rohár Reviewed-by: Konstantin Porotchkin Tested-by: Andre Heider

arm64: a37xx: pci: Make PCIe Reset GPIO DT compatible with Linux kernel DT

2020-08-31T12:45:53Z

Change active-high to active-low and change DT property name from reset-gpio to reset-gpios. This format of gpio reset is used by pci-aardvark driver in Linux kernel. Signed-off-by: Pali Rohár Reviewed-by: Stefan Roese Reviewed-by: Konstantin Porotchkin Tested-by: Andre Heider

pci: kconfig: Setup proper dependency for PCIE_ROCKCHIP

2020-08-27T15:20:33Z

There is missing dependency for PCIE_ROCKCHIP which selects PHY_ROCKCHIP_PCIE which directly depends on ARCH_ROCKCHIP. WARNING: unmet direct dependencies detected for PHY_ROCKCHIP_PCIE Depends on [n]: ARCH_ROCKCHIP [=n] Selected by [y]: - PCIE_ROCKCHIP [=y] && PCI [=y] Signed-off-by: Michal Simek Reviewed-by: Tom Rini

pci: Add PCI controller driver for OcteonTX / TX2

2020-08-25T06:01:16Z

Adds support for PCI ECAM/PEM controllers found on OcteonTX or OcteonTX2 SoC platforms. Signed-off-by: Suneel Garapati Reviewed-by: Simon Glass Cc: Bin Meng