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google/gru: Prettify strapping ID ADC table 

This patch shifts some comments around to make it easier to replace
values in the ADC strapping bucket table with compile-time conditionals.

Change-Id: Ic51917d3961a51d4e725ff824fb59aeefe149855
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/22890
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: David Schneider <dnschneid@chromium.org>
Reviewed-by: Martin Roth <martinroth@google.com>
This commit is contained in:
Julius Werner 2017-12-14 18:03:45 -08:00 committed by Martin Roth
parent 2d26a36910
commit 916fc80b69
1 changed files with 20 additions and 23 deletions
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43
src/mainboard/google/gru/boardid.c
View File

@ -19,29 +19,26 @@
#include <stdlib.h>
#include <soc/saradc.h>
/*
* ID info:
* ID : Volts : ADC value : Bucket
* == ===== ========= ===========
* 0 : 0.074V: 42 : 0 - 81
* 1 : 0.211V: 120 : 82 - 150
* 2 : 0.319V: 181 : 151 - 211
* 3 : 0.427V: 242 : 212 - 274
* 4 : 0.542V: 307 : 275 - 342
* 5 : 0.666V: 378 : 343 - 411
* 6 : 0.781V: 444 : 412 - 477
* 7 : 0.900V: 511 : 478 - 545
* 8 : 1.023V: 581 : 546 - 613
* 9 : 1.137V: 646 : 614 - 675
* 10 : 1.240V: 704 : 676 - 733
* 11 : 1.343V: 763 : 734 - 795
* 12 : 1.457V: 828 : 796 - 861
* 13 : 1.576V: 895 : 862 - 925
* 14 : 1.684V: 956 : 926 - 989
* 15 : 1.800V: 1023 : 990 - 1023
*/
static const int id_readings[] = { 81, 150, 211, 274, 342, 411, 477, 545,
613, 675, 733, 795, 861, 925, 989, 1023 };
static const int id_readings[] = {
/* ID : Volts : ADC value : Bucket */
/* == ===== ========= ========== */
/* 0 : 0.074V: 42 : 0 - 81 */ 81,
/* 1 : 0.211V: 120 : 82 - 150 */ 150,
/* 2 : 0.319V: 181 : 151 - 211 */ 211,
/* 3 : 0.427V: 242 : 212 - 274 */ 274,
/* 4 : 0.542V: 307 : 275 - 342 */ 342,
/* 5 : 0.666V: 378 : 343 - 411 */ 411,
/* 6 : 0.781V: 444 : 412 - 477 */ 477,
/* 7 : 0.900V: 511 : 478 - 545 */ 545,
/* 8 : 1.023V: 581 : 546 - 613 */ 613,
/* 9 : 1.137V: 646 : 614 - 675 */ 675,
/* 10 : 1.240V: 704 : 676 - 733 */ 733,
/* 11 : 1.343V: 763 : 734 - 795 */ 795,
/* 12 : 1.457V: 828 : 796 - 861 */ 861,
/* 13 : 1.576V: 895 : 862 - 925 */ 925,
/* 14 : 1.684V: 956 : 926 - 989 */ 989,
/* 15 : 1.800V: 1023 : 990 - 1023 */ 1023
};
_Static_assert(ARRAY_SIZE(id_readings) == 16, "Yo' messed up da table, bruh!");
static int cached_board_id = -1;
static int cached_ram_id = -1;