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| author | Luka Perkov <luka@openwrt.org> | 2014-08-11 20:35:13 +0000 |
|---|---|---|
| committer | Luka Perkov <luka@openwrt.org> | 2014-08-11 20:35:13 +0000 |
| commit | e859c9bc083be63dbb5e48189894b20b171c8eab (patch) | |
| tree | 3c73fab502208ad1860d144f3b6d0c7ccff1ad07 /target/linux/imx6/patches-3.14/208-ventana-plx-allow-override-gpio-output-mask.patch | |
| parent | 6b2145fca6698555c8f1e5c5373a440f2088e7a3 (diff) | |
| download | upstream-e859c9bc083be63dbb5e48189894b20b171c8eab.tar.gz upstream-e859c9bc083be63dbb5e48189894b20b171c8eab.tar.bz2 upstream-e859c9bc083be63dbb5e48189894b20b171c8eab.zip | |
imx6: kernel: add GW5520 support
The GW5520 is a small form-factor single-board computer with the following
features:
* 70x100mm form-factor
* IMX6DL 800MHz SoC (IMX6Q optional)
* 512MB 32bit DDR3 SDRAM (up to 2GB optional)
* 256MB NAND FLASH (up to 2GB optional)
* Gateworks System Controller
* 2x front-panel Intel i210 GbE adapters with passive PoE support
* 2x MiniPCIe sockets with USB support
* 2x front-panel USB
* 1x rear-panel full-size HDMI connector
* 1x front-panel bi-color user LED
* 1x front-panel user pushbutton
* 1x rear-panel barrel jack for power
* 1x Application connector with:
* 2x TTL level UARTs
* 10x TTL level Digital IO
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@42148 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/imx6/patches-3.14/208-ventana-plx-allow-override-gpio-output-mask.patch')
| -rw-r--r-- | target/linux/imx6/patches-3.14/208-ventana-plx-allow-override-gpio-output-mask.patch | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/target/linux/imx6/patches-3.14/208-ventana-plx-allow-override-gpio-output-mask.patch b/target/linux/imx6/patches-3.14/208-ventana-plx-allow-override-gpio-output-mask.patch new file mode 100644 index 0000000000..7c2d1b0936 --- /dev/null +++ b/target/linux/imx6/patches-3.14/208-ventana-plx-allow-override-gpio-output-mask.patch @@ -0,0 +1,58 @@ +This patch allows passing in the gpio output mask used for GPIO0-7 on the +PLX PCIe bridge. These GPIO's are used for PERST# on the downstream ports. + +Allowing the kernel to override the default configuration allows for keeping +specific devices held in reset. One important use of this is to allow +temporarily disabling devices that may request too many resources such as +an unprogrammed i210 device. + +--- a/arch/arm/mach-imx/mach-imx6q.c ++++ b/arch/arm/mach-imx/mach-imx6q.c +@@ -84,6 +84,7 @@ static int ksz9031rn_phy_fixup(struct ph + * fixup for PLX PEX8909 bridge to configure GPIO1-7 as output High + * as they are used for slots1-7 PERST# + */ ++unsigned int ventana_plx_gpio = 0xfe; + static void ventana_pciesw_early_fixup(struct pci_dev *dev) + { + u32 dw; +@@ -95,19 +96,25 @@ static void ventana_pciesw_early_fixup(s + return; + + pci_read_config_dword(dev, 0x62c, &dw); ++ dev_info(&dev->dev, "de-asserting downstream PERST# 0x%04x\n", ++ ventana_plx_gpio); + dw |= 0xaaa8; // GPIO1-7 outputs + pci_write_config_dword(dev, 0x62c, dw); +- +- pci_read_config_dword(dev, 0x644, &dw); +- dw |= 0xfe; // GPIO1-7 output high +- pci_write_config_dword(dev, 0x644, dw); +- ++ pci_write_config_dword(dev, 0x644, ventana_plx_gpio); + msleep(100); + } + DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8609, ventana_pciesw_early_fixup); + DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8606, ventana_pciesw_early_fixup); + DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8604, ventana_pciesw_early_fixup); + ++static int __init setup_ventana_plx_gpio(char *str) ++{ ++ get_option(&str, &ventana_plx_gpio); ++ ++ return 0; ++} ++early_param("plx_gpio", setup_ventana_plx_gpio); ++ + static int ar8031_phy_fixup(struct phy_device *dev) + { + u16 val; +@@ -308,7 +315,7 @@ static void __init imx6q_init_irq(void) + irqchip_init(); + } + +-static const char *imx6q_dt_compat[] __initconst = { ++static const char *imx6q_dt_compat[] __initdata = { + "fsl,imx6dl", + "fsl,imx6q", + NULL, |