diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-2.6.23/602-ssb-fix-serial-on-new-devices.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-2.6.23/602-ssb-fix-serial-on-new-devices.patch | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-2.6.23/602-ssb-fix-serial-on-new-devices.patch b/target/linux/brcm47xx/patches-2.6.23/602-ssb-fix-serial-on-new-devices.patch new file mode 100644 index 0000000000..2e0c862bec --- /dev/null +++ b/target/linux/brcm47xx/patches-2.6.23/602-ssb-fix-serial-on-new-devices.patch @@ -0,0 +1,90 @@ +Index: linux-2.6.23.16/drivers/ssb/driver_chipcommon.c +=================================================================== +--- linux-2.6.23.16.orig/drivers/ssb/driver_chipcommon.c 2008-02-18 21:38:58.000000000 +0100 ++++ linux-2.6.23.16/drivers/ssb/driver_chipcommon.c 2008-02-18 21:39:00.000000000 +0100 +@@ -365,6 +365,7 @@ int ssb_chipco_serial_init(struct ssb_ch + unsigned int irq; + u32 baud_base, div; + u32 i, n; ++ unsigned int ccrev = cc->dev->id.revision; + + plltype = (cc->capabilities & SSB_CHIPCO_CAP_PLLT); + irq = ssb_mips_irq(cc->dev); +@@ -376,14 +377,39 @@ int ssb_chipco_serial_init(struct ssb_ch + chipco_read32(cc, SSB_CHIPCO_CLOCK_M2)); + div = 1; + } else { +- if (cc->dev->id.revision >= 11) { ++ if (ccrev == 20) { ++ /* BCM5354 uses constant 25MHz clock */ ++ baud_base = 25000000; ++ div = 48; ++ /* Set the override bit so we don't divide it */ ++ chipco_write32(cc, SSB_CHIPCO_CORECTL, ++ chipco_read32(cc, SSB_CHIPCO_CORECTL) ++ | SSB_CHIPCO_CORECTL_UARTCLK0); ++ } else if ((ccrev >= 11) && (ccrev != 15)) { + /* Fixed ALP clock */ + baud_base = 20000000; ++ if (cc->capabilities & SSB_CHIPCO_CAP_PMU) { ++ /* FIXME: baud_base is different for devices with a PMU */ ++ SSB_WARN_ON(1); ++ } + div = 1; ++ if (ccrev >= 21) { ++ /* Turn off UART clock before switching clocksource. */ ++ chipco_write32(cc, SSB_CHIPCO_CORECTL, ++ chipco_read32(cc, SSB_CHIPCO_CORECTL) ++ & ~SSB_CHIPCO_CORECTL_UARTCLKEN); ++ } + /* Set the override bit so we don't divide it */ + chipco_write32(cc, SSB_CHIPCO_CORECTL, +- SSB_CHIPCO_CORECTL_UARTCLK0); +- } else if (cc->dev->id.revision >= 3) { ++ chipco_read32(cc, SSB_CHIPCO_CORECTL) ++ | SSB_CHIPCO_CORECTL_UARTCLK0); ++ if (ccrev >= 21) { ++ /* Re-enable the UART clock. */ ++ chipco_write32(cc, SSB_CHIPCO_CORECTL, ++ chipco_read32(cc, SSB_CHIPCO_CORECTL) ++ | SSB_CHIPCO_CORECTL_UARTCLKEN); ++ } ++ } else if (ccrev >= 3) { + /* Internal backplane clock */ + baud_base = ssb_clockspeed(bus); + div = chipco_read32(cc, SSB_CHIPCO_CLKDIV) +@@ -395,7 +421,7 @@ int ssb_chipco_serial_init(struct ssb_ch + } + + /* Clock source depends on strapping if UartClkOverride is unset */ +- if ((cc->dev->id.revision > 0) && ++ if ((ccrev > 0) && + !(chipco_read32(cc, SSB_CHIPCO_CORECTL) & SSB_CHIPCO_CORECTL_UARTCLK0)) { + if ((cc->capabilities & SSB_CHIPCO_CAP_UARTCLK) == + SSB_CHIPCO_CAP_UARTCLK_INT) { +@@ -417,7 +443,7 @@ int ssb_chipco_serial_init(struct ssb_ch + cc_mmio = cc->dev->bus->mmio + (cc->dev->core_index * SSB_CORE_SIZE); + uart_regs = cc_mmio + SSB_CHIPCO_UART0_DATA; + /* Offset changed at after rev 0 */ +- if (cc->dev->id.revision == 0) ++ if (ccrev == 0) + uart_regs += (i * 8); + else + uart_regs += (i * 256); +Index: linux-2.6.23.16/include/linux/ssb/ssb_driver_chipcommon.h +=================================================================== +--- linux-2.6.23.16.orig/include/linux/ssb/ssb_driver_chipcommon.h 2008-02-18 21:38:58.000000000 +0100 ++++ linux-2.6.23.16/include/linux/ssb/ssb_driver_chipcommon.h 2008-02-18 21:39:00.000000000 +0100 +@@ -51,9 +51,12 @@ + #define SSB_CHIPCO_CAP_JTAGM 0x00400000 /* JTAG master present */ + #define SSB_CHIPCO_CAP_BROM 0x00800000 /* Internal boot ROM active */ + #define SSB_CHIPCO_CAP_64BIT 0x08000000 /* 64-bit Backplane */ ++#define SSB_CHIPCO_CAP_PMU 0x10000000 /* PMU available (rev >= 20) */ ++#define SSB_CHIPCO_CAP_ECI 0x20000000 /* ECI available (rev >= 20) */ + #define SSB_CHIPCO_CORECTL 0x0008 + #define SSB_CHIPCO_CORECTL_UARTCLK0 0x00000001 /* Drive UART with internal clock */ + #define SSB_CHIPCO_CORECTL_SE 0x00000002 /* sync clk out enable (corerev >= 3) */ ++#define SSB_CHIPCO_CORECTL_UARTCLKEN 0x00000008 /* UART clock enable (rev >= 21) */ + #define SSB_CHIPCO_BIST 0x000C + #define SSB_CHIPCO_OTPS 0x0010 /* OTP status */ + #define SSB_CHIPCO_OTPS_PROGFAIL 0x80000000 |