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[79.139.237.54]) by smtp.gmail.com with ESMTPSA id m1sm2383295ljg.60.2020.06.28.20.18.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 28 Jun 2020 20:18:52 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , Mikko Perttunen Subject: [PATCH v2 1/6] drm/tegra: gr3d: Assert reset before power-gating Date: Mon, 29 Jun 2020 06:18:37 +0300 Message-Id: <20200629031842.32463-2-digetx@gmail.com> X-Mailer: git-send-email 2.26.0 In-Reply-To: <20200629031842.32463-1-digetx@gmail.com> References: <20200629031842.32463-1-digetx@gmail.com> MIME-Version: 1.0 X-Mailman-Approved-At: Mon, 29 Jun 2020 06:50:54 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-tegra@vger.kernel.org, dri-devel@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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 --- 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 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);