diff mbox series

[v1] drm/tegra: gr3d: Assert reset before power-gating

Message ID 20200516154115.14510-1-digetx@gmail.com
State New
Headers show
Series [v1] drm/tegra: gr3d: Assert reset before power-gating | expand

Commit Message

Dmitry Osipenko May 16, 2020, 3:41 p.m. UTC
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 <digetx@gmail.com>
---
 drivers/gpu/drm/tegra/gr3d.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/tegra/gr3d.c b/drivers/gpu/drm/tegra/gr3d.c
index c0a528be0369..b0b8154e8104 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);