From 790173dcfd505d03bd5fb1a92e28bb53c94b0876 Mon Sep 17 00:00:00 2001 From: Terje Bergstrom Date: Fri, 16 Oct 2015 15:24:50 -0700 Subject: gpu: nvgpu: Use gradual slowdown Program clock slowdown to happen using gradual slowdown. It is significantly faster than the default slowdown. Change-Id: I9e5259889637fce2c0b083a424b54af12bb45c25 Signed-off-by: Terje Bergstrom Reviewed-on: http://git-master/r/819698 --- drivers/gpu/nvgpu/gk20a/therm_gk20a.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) (limited to 'drivers/gpu/nvgpu/gk20a/therm_gk20a.c') diff --git a/drivers/gpu/nvgpu/gk20a/therm_gk20a.c b/drivers/gpu/nvgpu/gk20a/therm_gk20a.c index b02113ad..fd4149ae 100644 --- a/drivers/gpu/nvgpu/gk20a/therm_gk20a.c +++ b/drivers/gpu/nvgpu/gk20a/therm_gk20a.c @@ -35,6 +35,8 @@ static int gk20a_init_therm_setup_sw(struct gk20a *g) static int gk20a_init_therm_setup_hw(struct gk20a *g) { + u32 v; + /* program NV_THERM registers */ gk20a_writel(g, therm_use_a_r(), NV_THERM_USE_A_INIT); gk20a_writel(g, therm_evt_ext_therm_0_r(), @@ -44,6 +46,35 @@ static int gk20a_init_therm_setup_hw(struct gk20a *g) gk20a_writel(g, therm_evt_ext_therm_2_r(), NV_THERM_EVT_EXT_THERM_2_INIT); + gk20a_writel(g, therm_grad_stepping_table_r(0), + therm_grad_stepping_table_slowdown_factor0_f(therm_grad_stepping_table_slowdown_factor0_fpdiv_by1p5_f()) | + therm_grad_stepping_table_slowdown_factor1_f(therm_grad_stepping_table_slowdown_factor0_fpdiv_by2_f()) | + therm_grad_stepping_table_slowdown_factor2_f(therm_grad_stepping_table_slowdown_factor0_fpdiv_by4_f()) | + therm_grad_stepping_table_slowdown_factor3_f(therm_grad_stepping_table_slowdown_factor0_fpdiv_by8_f()) | + therm_grad_stepping_table_slowdown_factor4_f(therm_grad_stepping_table_slowdown_factor0_fpdiv_by8_f())); + gk20a_writel(g, therm_grad_stepping_table_r(1), + therm_grad_stepping_table_slowdown_factor0_f(therm_grad_stepping_table_slowdown_factor0_fpdiv_by8_f()) | + therm_grad_stepping_table_slowdown_factor1_f(therm_grad_stepping_table_slowdown_factor0_fpdiv_by8_f()) | + therm_grad_stepping_table_slowdown_factor2_f(therm_grad_stepping_table_slowdown_factor0_fpdiv_by8_f()) | + therm_grad_stepping_table_slowdown_factor3_f(therm_grad_stepping_table_slowdown_factor0_fpdiv_by8_f()) | + therm_grad_stepping_table_slowdown_factor4_f(therm_grad_stepping_table_slowdown_factor0_fpdiv_by8_f())); + + v = gk20a_readl(g, therm_clk_timing_r(0)); + v |= therm_clk_timing_grad_slowdown_enabled_f(); + gk20a_writel(g, therm_clk_timing_r(0), v); + + v = gk20a_readl(g, therm_config2_r()); + v |= therm_config2_grad_enable_f(1); + v |= therm_config2_slowdown_factor_extended_f(1); + gk20a_writel(g, therm_config2_r(), v); + + gk20a_writel(g, therm_grad_stepping1_r(), + therm_grad_stepping1_pdiv_duration_f(32)); + + v = gk20a_readl(g, therm_grad_stepping0_r()); + v |= therm_grad_stepping0_feature_enable_f(); + gk20a_writel(g, therm_grad_stepping0_r(), v); + return 0; } -- cgit v1.2.2