diff options
Diffstat (limited to 'arch/powerpc/boot/ebony.c')
-rw-r--r-- | arch/powerpc/boot/ebony.c | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/arch/powerpc/boot/ebony.c b/arch/powerpc/boot/ebony.c index 68beb494719..f61364c47a7 100644 --- a/arch/powerpc/boot/ebony.c +++ b/arch/powerpc/boot/ebony.c @@ -31,66 +31,6 @@ static u8 *ebony_mac0, *ebony_mac1; -/* Calculate 440GP clocks */ -void ibm440gp_fixup_clocks(unsigned int sysclk, unsigned int ser_clk) -{ - u32 sys0 = mfdcr(DCRN_CPC0_SYS0); - u32 cr0 = mfdcr(DCRN_CPC0_CR0); - u32 cpu, plb, opb, ebc, tb, uart0, uart1, m; - u32 opdv = CPC0_SYS0_OPDV(sys0); - u32 epdv = CPC0_SYS0_EPDV(sys0); - - if (sys0 & CPC0_SYS0_BYPASS) { - /* Bypass system PLL */ - cpu = plb = sysclk; - } else { - if (sys0 & CPC0_SYS0_EXTSL) - /* PerClk */ - m = CPC0_SYS0_FWDVB(sys0) * opdv * epdv; - else - /* CPU clock */ - m = CPC0_SYS0_FBDV(sys0) * CPC0_SYS0_FWDVA(sys0); - cpu = sysclk * m / CPC0_SYS0_FWDVA(sys0); - plb = sysclk * m / CPC0_SYS0_FWDVB(sys0); - } - - opb = plb / opdv; - ebc = opb / epdv; - - /* FIXME: Check if this is for all 440GP, or just Ebony */ - if ((mfpvr() & 0xf0000fff) == 0x40000440) - /* Rev. B 440GP, use external system clock */ - tb = sysclk; - else - /* Rev. C 440GP, errata force us to use internal clock */ - tb = cpu; - - if (cr0 & CPC0_CR0_U0EC) - /* External UART clock */ - uart0 = ser_clk; - else - /* Internal UART clock */ - uart0 = plb / CPC0_CR0_UDIV(cr0); - - if (cr0 & CPC0_CR0_U1EC) - /* External UART clock */ - uart1 = ser_clk; - else - /* Internal UART clock */ - uart1 = plb / CPC0_CR0_UDIV(cr0); - - printf("PPC440GP: SysClk = %dMHz (%x)\n\r", - (sysclk + 500000) / 1000000, sysclk); - - dt_fixup_cpu_clocks(cpu, tb, 0); - - dt_fixup_clock("/plb", plb); - dt_fixup_clock("/plb/opb", opb); - dt_fixup_clock("/plb/opb/ebc", ebc); - dt_fixup_clock("/plb/opb/serial@40000200", uart0); - dt_fixup_clock("/plb/opb/serial@40000300", uart1); -} - #define EBONY_FPGA_PATH "/plb/opb/ebc/fpga" #define EBONY_FPGA_FLASH_SEL 0x01 #define EBONY_SMALL_FLASH_PATH "/plb/opb/ebc/small-flash" |