diff options
| author | Alice Guo <alice.guo@nxp.com> | 2024-12-09 11:48:59 -0500 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2025-03-25 20:52:03 +0100 |
| commit | 229f3feb4b0442835b27d519679168bea2de96c2 (patch) | |
| tree | 063c287eba178d6ea5b917d358e3692a4a09ba60 | |
| parent | 92009c3ba8903820077d29b6bb8be68780fedbdb (diff) | |
thermal/drivers/qoriq: Power down TMU on system suspend
Enable power-down of TMU (Thermal Management Unit) for TMU version 2 during
system suspend to save power. Save approximately 4.3mW on VDD_ANA_1P8 on
i.MX93 platforms.
Signed-off-by: Alice Guo <alice.guo@nxp.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20241209164859.3758906-2-Frank.Li@nxp.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
| -rw-r--r-- | drivers/thermal/qoriq_thermal.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/thermal/qoriq_thermal.c b/drivers/thermal/qoriq_thermal.c index 183af15c3376..01b58be0dcc6 100644 --- a/drivers/thermal/qoriq_thermal.c +++ b/drivers/thermal/qoriq_thermal.c @@ -18,6 +18,7 @@ #define SITES_MAX 16 #define TMR_DISABLE 0x0 #define TMR_ME 0x80000000 +#define TMR_CMD BIT(29) #define TMR_ALPF 0x0c000000 #define TMR_ALPF_V2 0x03000000 #define TMTMIR_DEFAULT 0x0000000f @@ -342,6 +343,12 @@ static int qoriq_tmu_suspend(struct device *dev) if (ret) return ret; + if (data->ver > TMU_VER1) { + ret = regmap_set_bits(data->regmap, REGS_TMR, TMR_CMD); + if (ret) + return ret; + } + clk_disable_unprepare(data->clk); return 0; @@ -356,6 +363,12 @@ static int qoriq_tmu_resume(struct device *dev) if (ret) return ret; + if (data->ver > TMU_VER1) { + ret = regmap_clear_bits(data->regmap, REGS_TMR, TMR_CMD); + if (ret) + return ret; + } + /* Enable monitoring */ return regmap_update_bits(data->regmap, REGS_TMR, TMR_ME, TMR_ME); } |