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-rw-r--r--target/linux/lantiq/patches-3.8/0018-MIPS-lantiq-improve-pci-reset-gpio-handling.patch40
1 files changed, 40 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-3.8/0018-MIPS-lantiq-improve-pci-reset-gpio-handling.patch b/target/linux/lantiq/patches-3.8/0018-MIPS-lantiq-improve-pci-reset-gpio-handling.patch
new file mode 100644
index 0000000000..c41e8e1c82
--- /dev/null
+++ b/target/linux/lantiq/patches-3.8/0018-MIPS-lantiq-improve-pci-reset-gpio-handling.patch
@@ -0,0 +1,40 @@
+From b6684dd3036513e4f91986fe982356512458f711 Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Sat, 19 Jan 2013 08:54:26 +0000
+Subject: [PATCH 18/40] MIPS: lantiq: improve pci reset gpio handling
+
+We need to make sure that the reset gpio is available and also set a sane
+default state.
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+Patchwork: http://patchwork.linux-mips.org/patch/4817/
+---
+ arch/mips/pci/pci-lantiq.c | 12 ++++++++++--
+ 1 file changed, 10 insertions(+), 2 deletions(-)
+
+diff --git a/arch/mips/pci/pci-lantiq.c b/arch/mips/pci/pci-lantiq.c
+index 9568178..f32664b 100644
+--- a/arch/mips/pci/pci-lantiq.c
++++ b/arch/mips/pci/pci-lantiq.c
+@@ -129,8 +129,16 @@ static int ltq_pci_startup(struct platform_device *pdev)
+
+ /* setup reset gpio used by pci */
+ reset_gpio = of_get_named_gpio(node, "gpio-reset", 0);
+- if (gpio_is_valid(reset_gpio))
+- devm_gpio_request(&pdev->dev, reset_gpio, "pci-reset");
++ if (gpio_is_valid(reset_gpio)) {
++ int ret = devm_gpio_request(&pdev->dev,
++ reset_gpio, "pci-reset");
++ if (ret) {
++ dev_err(&pdev->dev,
++ "failed to request gpio %d\n", reset_gpio);
++ return ret;
++ }
++ gpio_direction_output(reset_gpio, 1);
++ }
+
+ /* enable auto-switching between PCI and EBU */
+ ltq_pci_w32(0xa, PCI_CR_CLK_CTRL);
+--
+1.7.10.4
+