parent
adb70acecb
commit
662e3943ff
@ -0,0 +1,70 @@ |
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Many of the Gateworks Ventana boards use a PLX PEX860X PCIe Switch |
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and utilize its GPIO outputs as PERST# for downstream ports. This |
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patch configures them appropriately during enumeration. |
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|
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Additionally many of the Ventana boards use CKO1 as the clock input for |
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an analog audio codec which is setup here. |
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|
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--- a/arch/arm/mach-imx/mach-imx6q.c |
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+++ b/arch/arm/mach-imx/mach-imx6q.c |
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@@ -25,6 +25,7 @@ |
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#include <linux/of_irq.h> |
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#include <linux/of_platform.h> |
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#include <linux/opp.h> |
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+#include <linux/pci.h> |
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#include <linux/phy.h> |
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#include <linux/regmap.h> |
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#include <linux/micrel_phy.h> |
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@@ -145,6 +146,42 @@ static void __init imx6q_sabrelite_init( |
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imx6q_sabrelite_cko1_setup(); |
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} |
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|
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+/* |
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+ * fixup for PEX 8909 bridge to configure GPIO1-7 as output High |
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+ * as they are used for slots1-7 PERST# |
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+ */ |
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+static void mx6_ventana_pciesw_early_fixup(struct pci_dev *dev) |
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+{ |
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+ u32 dw; |
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+ |
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+ if (!of_machine_is_compatible("gw,ventana")) |
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+ return; |
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+ |
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+ if (dev->devfn != 0) |
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+ return; |
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+ |
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+ pci_read_config_dword(dev, 0x62c, &dw); |
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+ dw |= 0xaaa8; // GPIO1-7 outputs |
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+ pci_write_config_dword(dev, 0x62c, dw); |
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+ |
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+ pci_read_config_dword(dev, 0x644, &dw); |
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+ dw |= 0xfe; // GPIO1-7 output high |
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+ pci_write_config_dword(dev, 0x644, dw); |
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+ |
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+ mdelay(100); |
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+} |
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+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8609, |
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+ mx6_ventana_pciesw_early_fixup); |
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+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8606, |
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+ mx6_ventana_pciesw_early_fixup); |
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+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8604, |
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+ mx6_ventana_pciesw_early_fixup); |
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+ |
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+static void __init imx6q_ventana_init(void) |
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+{ |
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+ imx6q_sabrelite_cko1_setup(); |
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+} |
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+ |
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static void __init imx6q_1588_init(void) |
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{ |
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struct regmap *gpr; |
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@@ -163,6 +200,9 @@ static void __init imx6q_usb_init(void) |
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|
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static void __init imx6q_init_machine(void) |
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{ |
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+ if (of_machine_is_compatible("gw,ventana")) |
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+ imx6q_ventana_init(); |
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+ |
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if (of_machine_is_compatible("fsl,imx6q-sabrelite")) |
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imx6q_sabrelite_init(); |
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|
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