You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
71 lines
1.9 KiB
71 lines
1.9 KiB
11 years ago
|
Many of the Gateworks Ventana boards use a PLX PEX860X PCIe Switch
|
||
|
|
and utilize its GPIO outputs as PERST# for downstream ports. This
|
||
|
|
patch configures them appropriately during enumeration.
|
||
|
|
|
||
|
|
Additionally many of the Ventana boards use CKO1 as the clock input for
|
||
|
|
an analog audio codec which is setup here.
|
||
|
|
|
||
|
|
--- a/arch/arm/mach-imx/mach-imx6q.c
|
||
|
|
+++ b/arch/arm/mach-imx/mach-imx6q.c
|
||
|
|
@@ -25,6 +25,7 @@
|
||
|
|
#include <linux/of_irq.h>
|
||
|
|
#include <linux/of_platform.h>
|
||
|
|
#include <linux/opp.h>
|
||
|
|
+#include <linux/pci.h>
|
||
|
|
#include <linux/phy.h>
|
||
|
|
#include <linux/regmap.h>
|
||
|
|
#include <linux/micrel_phy.h>
|
||
|
|
@@ -145,6 +146,42 @@ static void __init imx6q_sabrelite_init(
|
||
|
|
imx6q_sabrelite_cko1_setup();
|
||
|
|
}
|
||
|
|
|
||
|
|
+/*
|
||
|
|
+ * fixup for PEX 8909 bridge to configure GPIO1-7 as output High
|
||
|
|
+ * as they are used for slots1-7 PERST#
|
||
|
|
+ */
|
||
|
|
+static void mx6_ventana_pciesw_early_fixup(struct pci_dev *dev)
|
||
|
|
+{
|
||
|
|
+ u32 dw;
|
||
|
|
+
|
||
|
|
+ if (!of_machine_is_compatible("gw,ventana"))
|
||
|
|
+ return;
|
||
|
|
+
|
||
|
|
+ if (dev->devfn != 0)
|
||
|
|
+ return;
|
||
|
|
+
|
||
|
|
+ pci_read_config_dword(dev, 0x62c, &dw);
|
||
|
|
+ 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);
|
||
|
|
+
|
||
|
|
+ mdelay(100);
|
||
|
|
+}
|
||
|
|
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8609,
|
||
|
|
+ mx6_ventana_pciesw_early_fixup);
|
||
|
|
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8606,
|
||
|
|
+ mx6_ventana_pciesw_early_fixup);
|
||
|
|
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8604,
|
||
|
|
+ mx6_ventana_pciesw_early_fixup);
|
||
|
|
+
|
||
|
|
+static void __init imx6q_ventana_init(void)
|
||
|
|
+{
|
||
|
|
+ imx6q_sabrelite_cko1_setup();
|
||
|
|
+}
|
||
|
|
+
|
||
|
|
static void __init imx6q_1588_init(void)
|
||
|
|
{
|
||
|
|
struct regmap *gpr;
|
||
|
|
@@ -163,6 +200,9 @@ static void __init imx6q_usb_init(void)
|
||
|
|
|
||
|
|
static void __init imx6q_init_machine(void)
|
||
|
|
{
|
||
|
|
+ if (of_machine_is_compatible("gw,ventana"))
|
||
|
|
+ imx6q_ventana_init();
|
||
|
|
+
|
||
|
|
if (of_machine_is_compatible("fsl,imx6q-sabrelite"))
|
||
|
|
imx6q_sabrelite_init();
|
||
|
|
|