git.openwrt.org Git - openwrt/staging/aparcar.git/blob

   1 From da5a7765a20d34508036ba8ed1db87e546abcf4b Mon Sep 17 00:00:00 2001
   2 From: Yuantian Tang <andy.tang@nxp.com>
   3 Date: Mon, 25 May 2020 17:33:22 +0800
   4 Subject: [PATCH] thermal: qoriq: Update the settings for TMUv2
   5
   6 For TMU v2, TMSAR registers need to be set properly to get the
   7 accurate temperature values.
   8 Also the temperature read needs to be converted to degree Celsius
   9 since it is in degrees Kelvin.
  10
  11 Signed-off-by: Yuantian Tang <andy.tang@nxp.com>
  12 ---
  13  drivers/thermal/qoriq_thermal.c | 21 +++++++++++++++++++--
  14  1 file changed, 19 insertions(+), 2 deletions(-)
  15
  16 diff --git a/drivers/thermal/qoriq_thermal.c b/drivers/thermal/qoriq_thermal.c
  17 index ba7d6105a..8b371fd3d 100644
  18 --- a/drivers/thermal/qoriq_thermal.c
  19 +++ b/drivers/thermal/qoriq_thermal.c
  20 @@ -23,6 +23,7 @@
  21  #define TMTMIR_DEFAULT 0x0000000f
  22  #define TIER_DISABLE   0x0
  23  #define TEUMR0_V2              0x51009c00
  24 +#define TMSARA_V2              0xe
  25  #define TMU_VER1               0x1
  26  #define TMU_VER2               0x2
  27
  28 @@ -35,6 +36,13 @@ struct qoriq_tmu_site_regs {
  29         u8 res0[0x8];
  30  };
  31
  32 +struct qoriq_tmu_tmsar {
  33 +       u32 res0;
  34 +       u32 tmsar;
  35 +       u32 res1;
  36 +       u32 res2;
  37 +};
  38 +
  39  struct qoriq_tmu_regs_v1 {
  40         u32 tmr;                /* Mode Register */
  41         u32 tsr;                /* Status Register */
  42 @@ -95,7 +103,9 @@ struct qoriq_tmu_regs_v2 {
  43         u32 tscfgr;     /* Sensor Configuration Register */
  44         u8 res6[0x78];
  45         struct qoriq_tmu_site_regs site[SITES_MAX];
  46 -       u8 res7[0x9f8];
  47 +       u8 res10[0x100];
  48 +       struct qoriq_tmu_tmsar tmsar[16];
  49 +       u8 res7[0x7f8];
  50         u32 ipbrr0;             /* IP Block Revision Register 0 */
  51         u32 ipbrr1;             /* IP Block Revision Register 1 */
  52         u8 res8[0x300];
  53 @@ -158,7 +168,10 @@ static int tmu_get_temp(void *p, int *temp)
  54         u32 val;
  55
  56         val = tmu_read(qdata, &qdata->regs->site[qsensor->id].tritsr);
  57 -       *temp = (val & 0xff) * 1000;
  58 +       if (qdata->ver == TMU_VER1)
  59 +               *temp = (val & 0xff) * 1000;
  60 +       else
  61 +               *temp = (val & 0x1ff) * 1000 - 273150;
  62
  63         return 0;
  64  }
  65 @@ -319,6 +332,8 @@ static int qoriq_tmu_calibration(struct platform_device *pdev)
  66
  67  static void qoriq_tmu_init_device(struct qoriq_tmu_data *data)
  68  {
  69 +       int i;
  70 +
  71         /* Disable interrupt, using polling instead */
  72         tmu_write(data, TIER_DISABLE, &data->regs->tier);
  73
  74 @@ -328,6 +343,8 @@ static void qoriq_tmu_init_device(struct qoriq_tmu_data *data)
  75         } else {
  76                 tmu_write(data, TMTMIR_DEFAULT, &data->regs_v2->tmtmir);
  77                 tmu_write(data, TEUMR0_V2, &data->regs_v2->teumr0);
  78 +               for (i = 0; i < 7; i++)
  79 +                       tmu_write(data, TMSARA_V2, &data->regs_v2->tmsar[i].tmsar);
  80         }
  81
  82         /* Disable monitoring */
  83 --
  84 2.17.1
  85