diff options
Diffstat (limited to 'board/freescale/mpc8536ds/mpc8536ds.c')
| -rw-r--r-- | board/freescale/mpc8536ds/mpc8536ds.c | 148 |
1 files changed, 0 insertions, 148 deletions
diff --git a/board/freescale/mpc8536ds/mpc8536ds.c b/board/freescale/mpc8536ds/mpc8536ds.c index 1968106..50ca3ca 100644 --- a/board/freescale/mpc8536ds/mpc8536ds.c +++ b/board/freescale/mpc8536ds/mpc8536ds.c @@ -350,154 +350,6 @@ int board_early_init_r(void) return 0; } -#ifdef CONFIG_GET_CLK_FROM_ICS307 -/* decode S[0-2] to Output Divider (OD) */ -static unsigned char -ics307_S_to_OD[] = { - 10, 2, 8, 4, 5, 7, 3, 6 -}; - -/* Calculate frequency being generated by ICS307-02 clock chip based upon - * the control bytes being programmed into it. */ -/* XXX: This function should probably go into a common library */ -static unsigned long -ics307_clk_freq (unsigned char cw0, unsigned char cw1, unsigned char cw2) -{ - const unsigned long long InputFrequency = CONFIG_ICS307_REFCLK_HZ; - unsigned long VDW = ((cw1 << 1) & 0x1FE) + ((cw2 >> 7) & 1); - unsigned long RDW = cw2 & 0x7F; - unsigned long OD = ics307_S_to_OD[cw0 & 0x7]; - unsigned long freq; - - /* CLK1Frequency = InputFrequency * 2 * (VDW + 8) / ((RDW + 2) * OD) */ - - /* cw0: C1 C0 TTL F1 F0 S2 S1 S0 - * cw1: V8 V7 V6 V5 V4 V3 V2 V1 - * cw2: V0 R6 R5 R4 R3 R2 R1 R0 - * - * R6:R0 = Reference Divider Word (RDW) - * V8:V0 = VCO Divider Word (VDW) - * S2:S0 = Output Divider Select (OD) - * F1:F0 = Function of CLK2 Output - * TTL = duty cycle - * C1:C0 = internal load capacitance for cyrstal - */ - - /* Adding 1 to get a "nicely" rounded number, but this needs - * more tweaking to get a "properly" rounded number. */ - - freq = 1 + (InputFrequency * 2 * (VDW + 8) / ((RDW + 2) * OD)); - - debug("ICS307: CW[0-2]: %02X %02X %02X => %u Hz\n", cw0, cw1, cw2, - freq); - return freq; -} - -unsigned long -get_board_sys_clk(ulong dummy) -{ - u8 *pixis_base = (u8 *)PIXIS_BASE; - - return ics307_clk_freq ( - in_8(pixis_base + PIXIS_VSYSCLK0), - in_8(pixis_base + PIXIS_VSYSCLK1), - in_8(pixis_base + PIXIS_VSYSCLK2) - ); -} - -unsigned long -get_board_ddr_clk(ulong dummy) -{ - u8 *pixis_base = (u8 *)PIXIS_BASE; - - return ics307_clk_freq ( - in_8(pixis_base + PIXIS_VDDRCLK0), - in_8(pixis_base + PIXIS_VDDRCLK1), - in_8(pixis_base + PIXIS_VDDRCLK2) - ); -} -#else -unsigned long -get_board_sys_clk(ulong dummy) -{ - u8 i; - ulong val = 0; - u8 *pixis_base = (u8 *)PIXIS_BASE; - - i = in_8(pixis_base + PIXIS_SPD); - i &= 0x07; - - switch (i) { - case 0: - val = 33333333; - break; - case 1: - val = 40000000; - break; - case 2: - val = 50000000; - break; - case 3: - val = 66666666; - break; - case 4: - val = 83333333; - break; - case 5: - val = 100000000; - break; - case 6: - val = 133333333; - break; - case 7: - val = 166666666; - break; - } - - return val; -} - -unsigned long -get_board_ddr_clk(ulong dummy) -{ - u8 i; - ulong val = 0; - u8 *pixis_base = (u8 *)PIXIS_BASE; - - i = in_8(pixis_base + PIXIS_SPD); - i &= 0x38; - i >>= 3; - - switch (i) { - case 0: - val = 33333333; - break; - case 1: - val = 40000000; - break; - case 2: - val = 50000000; - break; - case 3: - val = 66666666; - break; - case 4: - val = 83333333; - break; - case 5: - val = 100000000; - break; - case 6: - val = 133333333; - break; - case 7: - val = 166666666; - break; - } - return val; -} -#endif - int board_eth_init(bd_t *bis) { #ifdef CONFIG_TSEC_ENET |