From fcc7fe425183f9ec95fba33d041eb359d0a3a598 Mon Sep 17 00:00:00 2001 From: Anatolij Gustschin Date: Fri, 8 Feb 2013 00:03:48 +0000 Subject: mpc512x: add ifm ac14xx board Add new mpc5121e based ac14xx board and a new pinmux config function for setting individual pinmux bit groups. This function is used in ac14xx board code. Signed-off-by: Anatolij Gustschin --- arch/powerpc/cpu/mpc512x/iopin.c | 54 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) (limited to 'arch/powerpc/cpu/mpc512x/iopin.c') diff --git a/arch/powerpc/cpu/mpc512x/iopin.c b/arch/powerpc/cpu/mpc512x/iopin.c index be20947623..1a39101622 100644 --- a/arch/powerpc/cpu/mpc512x/iopin.c +++ b/arch/powerpc/cpu/mpc512x/iopin.c @@ -47,3 +47,57 @@ void iopin_initialize(iopin_t *ioregs_init, int len) } return; } + +void iopin_initialize_bits(iopin_t *ioregs_init, int len) +{ + short i, j, p; + u32 *reg, mask; + immap_t *im = (immap_t *)CONFIG_SYS_IMMR; + + reg = (u32 *)&(im->io_ctrl); + + /* iterate over table entries */ + for (i = 0; i < len; i++) { + /* iterate over pins within a table entry */ + for (p = 0, j = ioregs_init[i].p_offset / sizeof(u_long); + p < ioregs_init[i].nr_pins; p++, j++) { + if (ioregs_init[i].bit_or & IO_PIN_OVER_EACH) { + /* replace all settings at once */ + out_be32(reg + j, ioregs_init[i].val); + } else { + /* + * only replace individual parts, but + * REPLACE them instead of just ORing + * them in and "inheriting" previously + * set bits which we don't want + */ + mask = 0; + if (ioregs_init[i].bit_or & IO_PIN_OVER_FMUX) + mask |= IO_PIN_FMUX(3); + + if (ioregs_init[i].bit_or & IO_PIN_OVER_HOLD) + mask |= IO_PIN_HOLD(3); + + if (ioregs_init[i].bit_or & IO_PIN_OVER_PULL) + mask |= IO_PIN_PUD(1) | IO_PIN_PUE(1); + + if (ioregs_init[i].bit_or & IO_PIN_OVER_STRIG) + mask |= IO_PIN_ST(1); + + if (ioregs_init[i].bit_or & IO_PIN_OVER_DRVSTR) + mask |= IO_PIN_DS(3); + /* + * DON'T do the "mask, then insert" + * in place on the register, it may + * break access to external hardware + * (like boot ROMs) when configuring + * LPB related pins, while the code to + * configure the pin is read from this + * very address region + */ + clrsetbits_be32(reg + j, mask, + ioregs_init[i].val & mask); + } + } + } +} -- cgit v1.2.1