mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-26 00:41:17 +00:00
123 lines
3.8 KiB
Diff
123 lines
3.8 KiB
Diff
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
|
|
Subject: [PATCH] USB: bcma: improve USB 2.0 PHY support for BCM4709 and
|
|
BCM47094
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
|
|
---
|
|
--- a/drivers/usb/host/bcma-hcd.c
|
|
+++ b/drivers/usb/host/bcma-hcd.c
|
|
@@ -31,6 +31,17 @@
|
|
#include <linux/usb/ohci_pdriver.h>
|
|
#include <linux/usb/xhci_pdriver.h>
|
|
|
|
+/* DMU (Device Management Unit) */
|
|
+#define BCMA_DMU_CRU_USB2_CONTROL 0x0164
|
|
+#define BCMA_DMU_CRU_USB2_CONTROL_USB_PLL_NDIV_MASK 0x00000FFC
|
|
+#define BCMA_DMU_CRU_USB2_CONTROL_USB_PLL_NDIV_SHIFT 2
|
|
+#define BCMA_DMU_CRU_USB2_CONTROL_USB_PLL_PDIV_MASK 0x00007000
|
|
+#define BCMA_DMU_CRU_USB2_CONTROL_USB_PLL_PDIV_SHIFT 12
|
|
+#define BCMA_DMU_CRU_CLKSET_KEY 0x0180
|
|
+#define BCMA_DMU_CRU_STRAPS_CTRL 0x02A0
|
|
+#define BCMA_DMU_CRU_STRAPS_CTRL_USB3 0x00000010
|
|
+#define BCMA_DMU_CRU_STRAPS_CTRL_4BYTE 0x00008000
|
|
+
|
|
MODULE_AUTHOR("Hauke Mehrtens");
|
|
MODULE_DESCRIPTION("Common USB driver for BCMA Bus");
|
|
MODULE_LICENSE("GPL");
|
|
@@ -167,10 +178,35 @@ static void bcma_hcd_init_chip_mips(stru
|
|
}
|
|
}
|
|
|
|
+static u32 bcma_hcd_usb_ref_clk_get_rate(void __iomem *dmu)
|
|
+{
|
|
+ u32 val, ndiv, pdiv, ch2_mdiv, ch2_freq;
|
|
+
|
|
+ /* get divider integer from the cru_genpll_control5 */
|
|
+ val = ioread32(dmu + 0x154);
|
|
+ ndiv = (val >> 20) & 0x3ff;
|
|
+ if (ndiv == 0)
|
|
+ ndiv = 1 << 10;
|
|
+
|
|
+ /* get pdiv and ch2_mdiv from the cru_genpll_control6 */
|
|
+ val = ioread32(dmu + 0x158);
|
|
+ pdiv = (val >> 24) & 0x7;
|
|
+ pdiv = (pdiv == 0) ? (1 << 3) : pdiv;
|
|
+
|
|
+ ch2_mdiv = val & 0xff;
|
|
+ ch2_mdiv = (ch2_mdiv == 0) ? (1 << 8) : ch2_mdiv;
|
|
+
|
|
+ /* calculate ch2_freq based on 25MHz reference clock */
|
|
+ ch2_freq = (25000000 / (pdiv * ch2_mdiv)) * ndiv;
|
|
+
|
|
+ return ch2_freq;
|
|
+}
|
|
+
|
|
static void bcma_hcd_init_chip_arm_phy(struct bcma_device *dev)
|
|
{
|
|
struct bcma_device *arm_core;
|
|
void __iomem *dmu;
|
|
+ u32 ref_clk_rate, usb2ctl, usb_pll_ndiv, usb_pll_pdiv;
|
|
|
|
arm_core = bcma_find_core(dev->bus, BCMA_CORE_ARMCA9);
|
|
if (!arm_core) {
|
|
@@ -184,14 +220,29 @@ static void bcma_hcd_init_chip_arm_phy(s
|
|
return;
|
|
}
|
|
|
|
+ ref_clk_rate = bcma_hcd_usb_ref_clk_get_rate(dmu);
|
|
+
|
|
+ usb2ctl = ioread32(dmu + BCMA_DMU_CRU_USB2_CONTROL);
|
|
+
|
|
+ usb_pll_pdiv = usb2ctl;
|
|
+ usb_pll_pdiv &= BCMA_DMU_CRU_USB2_CONTROL_USB_PLL_PDIV_MASK;
|
|
+ usb_pll_pdiv >>= BCMA_DMU_CRU_USB2_CONTROL_USB_PLL_PDIV_SHIFT;
|
|
+ if (!usb_pll_pdiv)
|
|
+ usb_pll_pdiv = 1 << 3;
|
|
+
|
|
+ /* Calculate ndiv based on a solid 1920 MHz that is for USB2 PHY */
|
|
+ usb_pll_ndiv = (1920000000 * usb_pll_pdiv) / ref_clk_rate;
|
|
+
|
|
/* Unlock DMU PLL settings */
|
|
- iowrite32(0x0000ea68, dmu + 0x180);
|
|
+ iowrite32(0x0000ea68, dmu + BCMA_DMU_CRU_CLKSET_KEY);
|
|
|
|
/* Write USB 2.0 PLL control setting */
|
|
- iowrite32(0x00dd10c3, dmu + 0x164);
|
|
+ usb2ctl &= ~BCMA_DMU_CRU_USB2_CONTROL_USB_PLL_NDIV_MASK;
|
|
+ usb2ctl |= usb_pll_ndiv << BCMA_DMU_CRU_USB2_CONTROL_USB_PLL_NDIV_SHIFT;
|
|
+ iowrite32(usb2ctl, dmu + BCMA_DMU_CRU_USB2_CONTROL);
|
|
|
|
/* Lock DMU PLL settings */
|
|
- iowrite32(0x00000000, dmu + 0x180);
|
|
+ iowrite32(0x00000000, dmu + BCMA_DMU_CRU_CLKSET_KEY);
|
|
|
|
iounmap(dmu);
|
|
}
|
|
@@ -219,15 +270,17 @@ static void bcma_hcd_init_chip_arm_hc(st
|
|
|
|
static void bcma_hcd_init_chip_arm(struct bcma_device *dev)
|
|
{
|
|
+ struct bcma_chipinfo *chipinfo = &dev->bus->chipinfo;
|
|
+
|
|
bcma_core_enable(dev, 0);
|
|
|
|
- if (dev->bus->chipinfo.id == BCMA_CHIP_ID_BCM4707 ||
|
|
- dev->bus->chipinfo.id == BCMA_CHIP_ID_BCM53018) {
|
|
- if (dev->bus->chipinfo.pkg == BCMA_PKG_ID_BCM4707 ||
|
|
- dev->bus->chipinfo.pkg == BCMA_PKG_ID_BCM4708)
|
|
- bcma_hcd_init_chip_arm_phy(dev);
|
|
+ if (chipinfo->id == BCMA_CHIP_ID_BCM4707 ||
|
|
+ chipinfo->id == BCMA_CHIP_ID_BCM47094 ||
|
|
+ chipinfo->id == BCMA_CHIP_ID_BCM53018) {
|
|
+ bcma_hcd_init_chip_arm_phy(dev);
|
|
|
|
- bcma_hcd_init_chip_arm_hc(dev);
|
|
+ if (1) /* TODO: Exclude BCM53573 */
|
|
+ bcma_hcd_init_chip_arm_hc(dev);
|
|
}
|
|
}
|
|
|