architecture/riscv64/package/u-boot/0013-board-sifive-spl-Set-remote-thermal-of-TMP451-to-85-.patch

   1 From 6265d23e2f9fdc0e33074a28d52a894b6be2b19d Mon Sep 17 00:00:00 2001
   2 From: Vincent Chen <vincent.chen@sifive.com>
   3 Date: Mon, 17 May 2021 16:21:13 +0800
   4 Subject: [PATCH 13/16] board: sifive: spl: Set remote thermal of TMP451 to 85
   5  deg C for the unmatched board
   6
   7 For TMP451 on the unmatched board, the default value of the remote thermal
   8 threshold is 108 deg C. This commit initilizes it to 85 deg C at SPL.
   9
  10 Signed-off-by: Vincent Chen <vincent.chen@sifive.com>
  11 ---
  12  board/sifive/unmatched/spl.c       | 29 +++++++++++++++++++++++++++++
  13  drivers/misc/Kconfig               | 10 ++++++++++
  14  include/configs/sifive-unmatched.h |  3 +++
  15  scripts/config_whitelist.txt       |  1 +
  16  4 files changed, 43 insertions(+)
  17
  18 diff --git a/board/sifive/unmatched/spl.c b/board/sifive/unmatched/spl.c
  19 index 3c3b22d..7d59ca0 100644
  20 --- a/board/sifive/unmatched/spl.c
  21 +++ b/board/sifive/unmatched/spl.c
  22 @@ -10,6 +10,8 @@
  23  #include <spl.h>
  24  #include <misc.h>
  25  #include <log.h>
  26 +#include <config.h>
  27 +#include <i2c.h>
  28  #include <linux/delay.h>
  29  #include <linux/io.h>
  30  #include <asm/gpio.h>
  31 @@ -25,6 +27,27 @@
  32  #define MODE_SELECT_SD         0xb
  33  #define MODE_SELECT_MASK       GENMASK(3, 0)
  34
  35 +#define TMP451_REMOTE_THERM_LIMIT_REG_OFFSET   0x19
  36 +#define TMP451_RETMOE_THERM_LIMIT_INIT_VALUE   0x55
  37 +
  38 +static inline int init_tmp451_remote_therm_limit(void)
  39 +{
  40 +       struct udevice *dev;
  41 +       unsigned char r_therm_limit = TMP451_RETMOE_THERM_LIMIT_INIT_VALUE;
  42 +       int ret;
  43 +
  44 +       ret = i2c_get_chip_for_busnum(CONFIG_SYS_TMP451_BUS_NUM,
  45 +                                     CONFIG_SYS_I2C_TMP451_ADDR,
  46 +                                     CONFIG_SYS_I2C_TMP451_ADDR_LEN,
  47 +                                     &dev);
  48 +
  49 +       if (!ret)
  50 +               ret = dm_i2c_write(dev, TMP451_REMOTE_THERM_LIMIT_REG_OFFSET,
  51 +                                  &r_therm_limit,
  52 +                                  sizeof(unsigned char));
  53 +       return ret;
  54 +}
  55 +
  56  static inline int spl_reset_device_by_gpio(const char *label, int pin, int low_width)
  57  {
  58         int ret;
  59 @@ -91,6 +114,12 @@ int spl_board_init_f(void)
  60
  61         pwm_device_init();
  62
  63 +       ret = init_tmp451_remote_therm_limit();
  64 +       if (ret) {
  65 +               debug("TMP451 remote THERM limit init failed: %d\n", ret);
  66 +               goto end;
  67 +       }
  68 +
  69         ret = spl_gemgxl_init();
  70         if (ret) {
  71                 debug("Gigabit ethernet PHY (VSC8541) init failed: %d\n", ret);
  72 diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
  73 index 997b713..2878313 100644
  74 --- a/drivers/misc/Kconfig
  75 +++ b/drivers/misc/Kconfig
  76 @@ -404,6 +404,10 @@ config SYS_I2C_EEPROM_ADDR
  77         hex "Chip address of the EEPROM device"
  78         default 0
  79
  80 +config SYS_I2C_TMP451_ADDR
  81 +       hex "Chip address of the TMP451 device"
  82 +       default 0
  83 +
  84  config SYS_I2C_EEPROM_BUS
  85         int "I2C bus of the EEPROM device."
  86         default 0
  87 @@ -429,6 +433,12 @@ config SYS_I2C_EEPROM_ADDR_LEN
  88         help
  89           Note: This is NOT the chip address length!
  90
  91 +config SYS_I2C_TMP451_ADDR_LEN
  92 +       int "Length in bytes of the TMP451 memory array address"
  93 +       default 1
  94 +       help
  95 +         Note: This is NOT the chip address length!
  96 +
  97  config SYS_I2C_EEPROM_ADDR_OVERFLOW
  98         hex "EEPROM Address Overflow"
  99         default 0
 100 diff --git a/include/configs/sifive-unmatched.h b/include/configs/sifive-unmatched.h
 101 index fd93e89..f75cf9b 100644
 102 --- a/include/configs/sifive-unmatched.h
 103 +++ b/include/configs/sifive-unmatched.h
 104 @@ -88,6 +88,9 @@
 105  #define CONFIG_SYS_EEPROM_BUS_NUM              0
 106  #define CONFIG_SYS_I2C_EEPROM_ADDR             0x54
 107  #define CONFIG_SYS_I2C_EEPROM_ADDR_LEN         0x1
 108 +#define CONFIG_SYS_TMP451_BUS_NUM              0
 109 +#define CONFIG_SYS_I2C_TMP451_ADDR             0x4c
 110 +#define CONFIG_SYS_I2C_TMP451_ADDR_LEN         0x1
 111
 112  #define CONFIG_ID_EEPROM
 113
 114 diff --git a/scripts/config_whitelist.txt b/scripts/config_whitelist.txt
 115 index 3dbcc04..a0005fe 100644
 116 --- a/scripts/config_whitelist.txt
 117 +++ b/scripts/config_whitelist.txt
 118 @@ -3550,6 +3550,7 @@ CONFIG_SYS_TIMER_COUNTER
 119  CONFIG_SYS_TIMER_COUNTS_DOWN
 120  CONFIG_SYS_TIMER_PRESCALER
 121  CONFIG_SYS_TIMER_RATE
 122 +CONFIG_SYS_TMP451_BUS_NUM
 123  CONFIG_SYS_TMPVIRT
 124  CONFIG_SYS_TMRINTR_MASK
 125  CONFIG_SYS_TMRINTR_NO
 126 --
 127 2.7.4
 128