From 57e70c1cc295de722f293872f89aedb1d94009b0 Mon Sep 17 00:00:00 2001 From: Luka Perkov Date: Wed, 30 Oct 2013 23:31:26 +0000 Subject: imx6: update patches Changes include PCI fixes and various upstream pending patches. Signed-off-by: Luka Perkov git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38624 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- ...0034-PCI-imx6-add-support-for-legacy-irqs.patch | 43 ++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 target/linux/imx6/patches-3.10/0034-PCI-imx6-add-support-for-legacy-irqs.patch (limited to 'target/linux/imx6/patches-3.10/0034-PCI-imx6-add-support-for-legacy-irqs.patch') diff --git a/target/linux/imx6/patches-3.10/0034-PCI-imx6-add-support-for-legacy-irqs.patch b/target/linux/imx6/patches-3.10/0034-PCI-imx6-add-support-for-legacy-irqs.patch new file mode 100644 index 0000000000..1f81e4338c --- /dev/null +++ b/target/linux/imx6/patches-3.10/0034-PCI-imx6-add-support-for-legacy-irqs.patch @@ -0,0 +1,43 @@ +From: Tim Harvey +Subject: [PATCH] PCI: imx6: add support for legacy irqs + +The i.MX6 supports legacy IRQ's via 155,154,153,152. When devices +are behind a PCIe-to-PCIe switch (at least for the TI XIO2001) the +mapping is reversed from when they are behind a PCIe switch. + +This patch still needs some review and clarification before going +upstream. +--- + drivers/pci/host/pcie-designware.c | 21 ++++++++++++++++++++- + 1 file changed, 20 insertions(+), 1 deletion(-) + +--- a/drivers/pci/host/pcie-designware.c ++++ b/drivers/pci/host/pcie-designware.c +@@ -447,7 +447,26 @@ int dw_pcie_map_irq(const struct pci_dev + { + struct pcie_port *pp = sys_to_pcie(dev->bus->sysdata); + +- return pp->irq; ++ /* TI XIO2001 PCIe-to-PCI bridge IRQs are flipped it seems */ ++ if ( dev->bus && dev->bus->self ++ && (dev->bus->self->vendor == 0x104c) ++ && (dev->bus->self->device == 0x8240)) { ++ switch (pin) { ++ case 1: return pp->irq - 3; ++ case 2: return pp->irq - 2; ++ case 3: return pp->irq - 1; ++ case 4: return pp->irq; ++ default: return -1; ++ } ++ } else { ++ switch (pin) { ++ case 1: return pp->irq; ++ case 2: return pp->irq - 1; ++ case 3: return pp->irq - 2; ++ case 4: return pp->irq - 3; ++ default: return -1; ++ } ++ } + } + + static struct hw_pci dw_pci = { -- cgit v1.2.3