package/boot/uboot-sifiveu/patches/0005-board-sifive-spl-Set-remote-thermal-of-TMP451-to-85-.patch

   1 From 07f84ed283b913cbdf87181ae2ed65467d923df5 Mon Sep 17 00:00:00 2001
   2 From: Vincent Chen <vincent.chen@sifive.com>
   3 Date: Mon, 24 Jan 2022 02:57:40 -0800
   4 Subject: [PATCH 2/2] 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
   8 thermal threshold is 108 deg C. This commit initilizes it to 85 deg C at SPL.
   9 ---
  10  board/sifive/unmatched/spl.c       | 29 +++++++++++++++++++++++++++++
  11  drivers/misc/Kconfig               | 10 ++++++++++
  12  include/configs/sifive-unmatched.h |  4 ++++
  13  scripts/config_whitelist.txt       |  1 +
  14  4 files changed, 44 insertions(+)
  15
  16 --- a/board/sifive/unmatched/spl.c
  17 +++ b/board/sifive/unmatched/spl.c
  18 @@ -10,6 +10,8 @@
  19  #include <spl.h>
  20  #include <misc.h>
  21  #include <log.h>
  22 +#include <config.h>
  23 +#include <i2c.h>
  24  #include <linux/delay.h>
  25  #include <linux/io.h>
  26  #include <asm/gpio.h>
  27 @@ -26,6 +28,27 @@
  28  #define MODE_SELECT_SD         0xb
  29  #define MODE_SELECT_MASK       GENMASK(3, 0)
  30
  31 +#define TMP451_REMOTE_THERM_LIMIT_REG_OFFSET   0x19
  32 +#define TMP451_REMOTE_THERM_LIMIT_INIT_VALUE   0x55
  33 +
  34 +static inline int init_tmp451_remote_therm_limit(void)
  35 +{
  36 +       struct udevice *dev;
  37 +       unsigned char r_therm_limit = TMP451_REMOTE_THERM_LIMIT_INIT_VALUE;
  38 +       int ret;
  39 +
  40 +       ret = i2c_get_chip_for_busnum(CONFIG_SYS_TMP451_BUS_NUM,
  41 +                                     CONFIG_SYS_I2C_TMP451_ADDR,
  42 +                                     CONFIG_SYS_I2C_TMP451_ADDR_LEN,
  43 +                                     &dev);
  44 +
  45 +       if (!ret)
  46 +               ret = dm_i2c_write(dev, TMP451_REMOTE_THERM_LIMIT_REG_OFFSET,
  47 +                                  &r_therm_limit,
  48 +                                  sizeof(unsigned char));
  49 +       return ret;
  50 +}
  51 +
  52  static inline int spl_reset_device_by_gpio(const char *label, int pin, int low_width)
  53  {
  54         int ret;
  55 @@ -92,6 +115,12 @@ int spl_board_init_f(void)
  56
  57         pwm_device_init();
  58
  59 +       ret = init_tmp451_remote_therm_limit();
  60 +       if (ret) {
  61 +               debug("TMP451 remote THERM limit init failed: %d\n", ret);
  62 +               goto end;
  63 +       }
  64 +
  65         ret = spl_gemgxl_init();
  66         if (ret) {
  67                 debug("Gigabit ethernet PHY (VSC8541) init failed: %d\n", ret);
  68 --- a/drivers/misc/Kconfig
  69 +++ b/drivers/misc/Kconfig
  70 @@ -536,8 +536,18 @@ config SYS_I2C_EEPROM_ADDR
  71         depends on ID_EEPROM || I2C_EEPROM || SPL_I2C_EEPROM || CMD_EEPROM || ENV_IS_IN_EEPROM
  72         default 0
  73
  74 +config SYS_I2C_TMP451_ADDR
  75 +       hex "Chip address of the TMP451 device"
  76 +       default 0
  77 +
  78  if I2C_EEPROM
  79
  80 +config SYS_I2C_TMP451_ADDR_LEN
  81 +       int "Length in bytes of the TMP451 memory array address"
  82 +       default 1
  83 +       help
  84 +         Note: This is NOT the chip address length!
  85 +
  86  config SYS_I2C_EEPROM_ADDR_OVERFLOW
  87         hex "EEPROM Address Overflow"
  88         default 0x0
  89 --- a/include/configs/sifive-unmatched.h
  90 +++ b/include/configs/sifive-unmatched.h
  91 @@ -15,6 +15,10 @@
  92
  93  #define CONFIG_STANDALONE_LOAD_ADDR    0x80200000
  94
  95 +#define CONFIG_SYS_TMP451_BUS_NUM      0
  96 +#define CONFIG_SYS_I2C_TMP451_ADDR     0x4c
  97 +#define CONFIG_SYS_I2C_TMP451_ADDR_LEN 0x1
  98 +
  99  /* Environment options */
 100
 101  #define BOOT_TARGET_DEVICES(func) \
 102 --- a/scripts/config_whitelist.txt
 103 +++ b/scripts/config_whitelist.txt
 104 @@ -1268,6 +1268,7 @@ CONFIG_SYS_TIMER_BASE
 105  CONFIG_SYS_TIMER_COUNTER
 106  CONFIG_SYS_TIMER_COUNTS_DOWN
 107  CONFIG_SYS_TIMER_RATE
 108 +CONFIG_SYS_TMP451_BUS_NUM
 109  CONFIG_SYS_TMPVIRT
 110  CONFIG_SYS_TSEC1_OFFSET
 111  CONFIG_SYS_TX_ETH_BUFFER