From 2c2a291d01efdcf336796557de1f651b2581e08d Mon Sep 17 00:00:00 2001 From: Dmitry Osipenko Date: Mon, 29 Jun 2020 06:18:37 +0300 Subject: [PATCH] drm/tegra: gr3d: Assert reset before power-gating Tegra TRM documentation states that hardware should be in a default state when power partition is turned off, i.e. reset should be asserted. This patch adds the missing reset assertions. Signed-off-by: Dmitry Osipenko Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/gr3d.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/tegra/gr3d.c b/drivers/gpu/drm/tegra/gr3d.c index c0a528be..b0b8154 100644 --- a/drivers/gpu/drm/tegra/gr3d.c +++ b/drivers/gpu/drm/tegra/gr3d.c @@ -381,10 +381,12 @@ static int gr3d_remove(struct platform_device *pdev) } if (gr3d->clk_secondary) { + reset_control_assert(gr3d->rst_secondary); tegra_powergate_power_off(TEGRA_POWERGATE_3D1); clk_disable_unprepare(gr3d->clk_secondary); } + reset_control_assert(gr3d->rst); tegra_powergate_power_off(TEGRA_POWERGATE_3D); clk_disable_unprepare(gr3d->clk); -- 2.7.4