diff options
Diffstat (limited to 'board/vell/tune_mp2964.c')
-rw-r--r-- | board/vell/tune_mp2964.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/board/vell/tune_mp2964.c b/board/vell/tune_mp2964.c new file mode 100644 index 0000000000..198f06d8eb --- /dev/null +++ b/board/vell/tune_mp2964.c @@ -0,0 +1,43 @@ +/* Copyright 2021 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +/* Tune the MP2964 IMVP9.1 parameters for brya */ + +#include "common.h" +#include "compile_time_macros.h" +#include "console.h" +#include "hooks.h" +#include "mp2964.h" + +const static struct mp2964_reg_val rail_a[] = { + { MP2964_MFR_ALT_SET, 0xe081 }, /* ALERT_DELAY = 200ns */ +}; +const static struct mp2964_reg_val rail_b[] = { + { MP2964_MFR_ALT_SET, 0xe081 }, /* ALERT_DELAY = 200ns */ +}; + +static void mp2964_on_startup(void) +{ + static int chip_updated; + int status; + + if (get_board_id() != 1) + return; + + if (chip_updated) + return; + + chip_updated = 1; + + ccprintf("%s: attempting to tune PMIC\n", __func__); + + status = mp2964_tune(rail_a, ARRAY_SIZE(rail_a), + rail_b, ARRAY_SIZE(rail_b)); + if (status != EC_SUCCESS) + ccprintf("%s: could not update all settings\n", __func__); +} + +DECLARE_HOOK(HOOK_CHIPSET_STARTUP, mp2964_on_startup, + HOOK_PRIO_FIRST); |