From mboxrd@z Thu Jan 1 00:00:00 1970 From: jg1.han@samsung.com (Jingoo Han) Date: Fri, 28 Feb 2014 10:50:25 +0900 Subject: [RFC PATCH 0/3] PCI: imx6: fixup for add-in card IRQ mismapping In-Reply-To: <1393550394-11071-1-git-send-email-tharvey@gateworks.com> References: <1393550394-11071-1-git-send-email-tharvey@gateworks.com> Message-ID: <000701cf3427$72f1c590$58d550b0$%han@samsung.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Friday, February 28, 2014 10:20 AM, Tim Harvey wrote: > > An add-in card used on the Ventana IMX6 SoC based family of boards has a > TI XIO2001 PCIe-to-PCI bridge where the INTA/B/C/D mappings between the > bridge and the four mini-PCI slots are swapped (INTD/C/B/A). (+cc Marek Vasut, Pratyush Anand, Kishon Vijay Abraham I, Mohit KUMAR DCG) This problem happens from the 'Board', not a 'SoC'. 'TI XIO2001 PCIe-to-PCI bridge' is not a 'SoC'. 'pci-imx6.c' is the driver for 'IMX6 PCI IP', not for 'IMX6 SoC based board'. Isn't it? Then, the workaround code for board problem should NOT be included to './drivers/pci/host/' side. Also, please add the following members to CC list. They will give important comments. : Marek Vasut, Pratyush Anand, Kishon Vijay Abraham I, Mohit KUMAR DCG Best regards, Jingoo Han > > This series adds legacy PCI interrupt mapping to support PCI bridges on > IMX6 PCIe host controllers, adds the ability to use a host-specific > custom swizzle function, then uses that to fix the IRQ mapping. > > I'm hoping this is the right way to perform such a workaround - please provide > feedback if not. Patch1 will likely collide with the owrk Lucas is doing > with device-tree bindings and MSI support. I'm happy to re-base if/when > needed. > > Signed-off-by: Tim Harvey > Cc: Bjorn Helgaas > Cc: Richard Zhu > Cc: Shawn Guo > Cc: Lucas Stach > Cc: Sean Cross > Cc: Jingoo Han > --- > Tim Harvey (3): > PCI: designware: add legacy PCI interrupt mapping > PCI: designware: add ability for custom swizzle > PCI: imx6: ventana: fixup for IRQ mismapping > > arch/arm/boot/dts/imx6qdl.dtsi | 2 +- > drivers/pci/host/pci-exynos.c | 7 ++++-- > drivers/pci/host/pci-imx6.c | 47 ++++++++++++++++++++++++++++++++++---- > drivers/pci/host/pcie-designware.c | 11 ++++++++- > drivers/pci/host/pcie-designware.h | 3 ++- > include/linux/pci_ids.h | 1 + > 6 files changed, 62 insertions(+), 9 deletions(-) > > -- > 1.8.3.2