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authorGabor Juhos <juhosg@openwrt.org>2013-05-30 16:23:06 +0000
committerGabor Juhos <juhosg@openwrt.org>2013-05-30 16:23:06 +0000
commitf02765086dbb51df6dc24942cd2d5cc02db77af6 (patch)
tree5ccb25ea41c60bdce0cf5a8d0aa13d237fd05366 /target/linux/ar71xx/patches-3.8/525-MIPS-ath79-enable-qca-usb-quirks.patch
parent6ff976a87a5442bc18fe64deda758e026374f7f6 (diff)
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ar71xx: add USB workarounds for AR934x/QCA955x SoCs
Signed-off-by: Gabor Juhos <juhosg@openwrt.org> SVN-Revision: 36787
Diffstat (limited to 'target/linux/ar71xx/patches-3.8/525-MIPS-ath79-enable-qca-usb-quirks.patch')
-rw-r--r--target/linux/ar71xx/patches-3.8/525-MIPS-ath79-enable-qca-usb-quirks.patch86
1 files changed, 86 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-3.8/525-MIPS-ath79-enable-qca-usb-quirks.patch b/target/linux/ar71xx/patches-3.8/525-MIPS-ath79-enable-qca-usb-quirks.patch
new file mode 100644
index 0000000..ede8035
--- /dev/null
+++ b/target/linux/ar71xx/patches-3.8/525-MIPS-ath79-enable-qca-usb-quirks.patch
@@ -0,0 +1,86 @@
+--- a/arch/mips/ath79/dev-usb.c
++++ b/arch/mips/ath79/dev-usb.c
+@@ -182,14 +182,34 @@ static void __init ar933x_usb_setup(void
+ &ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2));
+ }
+
+-static void __init ar934x_usb_setup(void)
++static void enable_tx_tx_idp_violation_fix(unsigned base)
+ {
+- u32 bootstrap;
++ void __iomem *phy_reg;
++ u32 t;
++
++ phy_reg = ioremap(base, 4);
++ if (!phy_reg)
++ return;
++
++ t = ioread32(phy_reg);
++ t &= ~0xff;
++ t |= 0x58;
++ iowrite32(t, phy_reg);
++
++ iounmap(phy_reg);
++}
+
+- bootstrap = ath79_reset_rr(AR934X_RESET_REG_BOOTSTRAP);
+- if (bootstrap & AR934X_BOOTSTRAP_USB_MODE_DEVICE)
++static void ar934x_usb_reset_notifier(struct platform_device *pdev)
++{
++ if (pdev->id != -1)
+ return;
+
++ enable_tx_tx_idp_violation_fix(0x18116c94);
++ dev_info(&pdev->dev, "TX-TX IDP fix enabled\n");
++}
++
++static void __init ar934x_usb_setup(void)
++{
+ ath79_device_reset_set(AR934X_RESET_USBSUS_OVERRIDE);
+ udelay(1000);
+
+@@ -202,14 +222,44 @@ static void __init ar934x_usb_setup(void
+ ath79_device_reset_clear(AR934X_RESET_USB_HOST);
+ udelay(1000);
+
++ ath79_ehci_pdata_v2.qca_force_host_mode = 1;
++ ath79_ehci_pdata_v2.qca_force_16bit_ptw = 1;
++ if (ath79_soc_rev >= 3)
++ ath79_ehci_pdata_v2.reset_notifier = ar934x_usb_reset_notifier;
++
+ ath79_usb_register("ehci-platform", -1,
+ AR934X_EHCI_BASE, AR934X_EHCI_SIZE,
+ ATH79_CPU_IRQ(3),
+ &ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2));
+ }
+
++static void qca955x_usb_reset_notifier(struct platform_device *pdev)
++{
++ u32 base;
++
++ switch (pdev->id) {
++ case 0:
++ base = 0x18116c94;
++ break;
++
++ case 1:
++ base = 0x18116e54;
++ break;
++
++ default:
++ return;
++ }
++
++ enable_tx_tx_idp_violation_fix(base);
++ dev_info(&pdev->dev, "TX-TX IDP fix enabled\n");
++}
++
+ static void __init qca955x_usb_setup(void)
+ {
++ ath79_ehci_pdata_v2.qca_force_host_mode = 1;
++ ath79_ehci_pdata_v2.qca_force_16bit_ptw = 1;
++ ath79_ehci_pdata_v2.reset_notifier = qca955x_usb_reset_notifier;
++
+ ath79_usb_register("ehci-platform", 0,
+ QCA955X_EHCI0_BASE, QCA955X_EHCI_SIZE,
+ ATH79_IP3_IRQ(0),