diff options
Diffstat (limited to 'src/soc/marvell/armada38x/clock.c')
| -rw-r--r-- | src/soc/marvell/armada38x/clock.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/soc/marvell/armada38x/clock.c b/src/soc/marvell/armada38x/clock.c new file mode 100644 index 0000000000..579e1a3d2b --- /dev/null +++ b/src/soc/marvell/armada38x/clock.c @@ -0,0 +1,35 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2015 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <soc/common.h> +#include <soc/clock.h> + +uint32_t mv_tclk_get(void) +{ + uint32_t tclk_reg_value; + uint32_t tclk; + + tclk_reg_value = (mrvl_reg_read(MPP_SAMPLE_AT_RESET)); + tclk_reg_value = ((tclk_reg_value & (1 << 15)) >> 15); + switch (tclk_reg_value) { + case 0: + tclk = MV_BOARD_TCLK_250MHZ; + case 1: + tclk = MV_BOARD_TCLK_200MHZ; + default: + tclk = MV_BOARD_TCLK_250MHZ; + } + return tclk; +} |