3 * Bill Hunter, Wave 7 Optics, williamhunter@mediaone.net
5 * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com.
7 * SPDX-License-Identifier: GPL-2.0+
16 /* for LM75 DTT POST test */
17 #define DTT_READ_TEMP 0x0
18 #define DTT_CONFIG 0x1
19 #define DTT_TEMP_HYST 0x2
20 #define DTT_TEMP_SET 0x3
22 #if defined(CONFIG_RTC_M48T35A)
25 volatile uchar
*tchar
= (uchar
*)(CONFIG_SYS_NVRAM_BASE_ADDR
+ CONFIG_SYS_NVRAM_SIZE
- 9);
28 /* set up led code for RTC tests */
32 * Do RTC battery test. The first write after power up
33 * fails if battery is low.
36 if ((*tchar
^ 0xaa) != 0x0) log_warn(ERR_RTCBAT
);
37 *tchar
= 0x55; /* Reset test address */
40 * Now lets check the validity of the values in the RTC.
43 if ((tmp
.tm_sec
< 0) | (tmp
.tm_sec
> 59) |
44 (tmp
.tm_min
< 0) | (tmp
.tm_min
> 59) |
45 (tmp
.tm_hour
< 0) | (tmp
.tm_hour
> 23) |
46 (tmp
.tm_mday
< 1 ) | (tmp
.tm_mday
> 31) |
47 (tmp
.tm_mon
< 1 ) | (tmp
.tm_mon
> 12) |
48 (tmp
.tm_year
< 2000) | (tmp
.tm_year
> 2500) |
49 (tmp
.tm_wday
< 1 ) | (tmp
.tm_wday
> 7)) {
55 * Now lets do a check to see if the NV RAM is there.
58 if ((*tchar
^ 0xaa) != 0x0) log_err(ERR_RTCVAL
);
59 *tchar
= 0x55; /* Reset test address */
62 #endif /* CONFIG_RTC_M48T35A */
65 #ifdef CONFIG_DTT_LM75
66 int dtt_test(int sensor
)
68 short temp
, trip
, hyst
;
71 temp
= dtt_read(sensor
, DTT_READ_TEMP
) / 256;
72 trip
= dtt_read(sensor
, DTT_TEMP_SET
) / 256;
73 hyst
= dtt_read(sensor
, DTT_TEMP_HYST
) / 256;
76 if ((hyst
!= (CONFIG_SYS_DTT_MAX_TEMP
- CONFIG_SYS_DTT_HYSTERESIS
)) ||
77 (trip
!= CONFIG_SYS_DTT_MAX_TEMP
) ||
78 (temp
< CONFIG_SYS_DTT_LOW_TEMP
) || (temp
> CONFIG_SYS_DTT_MAX_TEMP
))
83 #endif /* CONFIG_DTT_LM75 */
85 /*****************************************/
89 #if defined(CONFIG_RTC_M48T35A)
91 #endif /* CONFIG_RTC_M48T35A */
93 #ifdef CONFIG_DTT_LM75
95 if(dtt_test(2) != 0) log_warn(ERR_Ttest0
);
96 if(dtt_test(4) != 0) log_warn(ERR_Ttest1
);
97 #endif /* CONFIG_DTT_LM75 */