On 08/05/2014 04:13 PM, Mikko Perttunen wrote:
> This adds a device tree controlled option to enable PMC-based
> thermal reset in overheating situations. Thermtrip is supported on
> Tegra114 and Tegra124. The thermal reset only works when the thermal
> sensors are calibrated, so a soctherm driver is also required.
>
> Signed-off-by: Mikko Perttunen <mperttunen@xxxxxxxxxx>
> ---
> drivers/soc/tegra/pmc.c | 348 ++++++++++++++++++++++++++++++------------------
> 1 file changed, 216 insertions(+), 132 deletions(-)
>
> diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c
> index a2c0ceb..2c617d7 100644
> --- a/drivers/soc/tegra/pmc.c
> +++ b/drivers/soc/tegra/pmc.c
> @@ -83,11 +83,28 @@
>
> #define GPU_RG_CNTRL 0x2d4
>
> +#define PMC_SENSOR_CTRL 0x1b0
> +#define PMC_SENSOR_CTRL_SCRATCH_WRITE (1 << 2)
> +#define PMC_SENSOR_CTRL_ENABLE_RST (1 << 1)
> +
> +#define PMC_SCRATCH54 0x258
> +#define PMC_SCRATCH54_DATA_SHIFT 8
> +#define PMC_SCRATCH54_ADDR_SHIFT 0
> +
> +#define PMC_SCRATCH55 0x25c
> +#define PMC_SCRATCH55_RESET_TEGRA (1 << 31)
> +#define PMC_SCRATCH55_CNTRL_ID_SHIFT 27
> +#define PMC_SCRATCH55_PINMUX_SHIFT 24
> +#define PMC_SCRATCH55_16BITOP (1 << 15)
> +#define PMC_SCRATCH55_CHECKSUM_SHIFT 16
> +#define PMC_SCRATCH55_I2CSLV1_SHIFT 0
> +
> struct tegra_pmc_soc {
> unsigned int num_powergates;
> const char *const *powergates;
> unsigned int num_cpu_powergates;
> const u8 *cpu_powergates;
> + bool has_thermal_reset;
According to the DRM, the scratch54/55 is used for TSENSE_RESET, so I
prefer to change the name to has_tsense_reset().
> };
>
> /**
> @@ -606,6 +623,203 @@ void tegra_pmc_enter_suspend_mode(enum tegra_suspend_mode mode)
> }
> +
> +void tegra_pmc_init_thermal_reset(struct device_node *np)
I prefer to change the name to tegra_pmc_init_tsense_reset().
> +{
> + u32 pmu_i2c_addr, i2c_ctrl_id, reg_addr, reg_data, pinmux;
> + bool pmu_16bit_ops;
> + u32 val, checksum;
> + const struct of_device_id *match = of_match_node(tegra_pmc_match, np);
> + const struct tegra_pmc_soc *data = match->data;
> +
> --
> 1.8.1.5
>
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