From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Osipenko Subject: [PATCH v9 13/15] memory: tegra: Ensure timing control debug features are disabled Date: Tue, 30 Jul 2019 19:56:16 +0300 Message-ID: <20190730165618.10122-14-digetx@gmail.com> References: <20190730165618.10122-1-digetx@gmail.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20190730165618.10122-1-digetx@gmail.com> Sender: linux-kernel-owner@vger.kernel.org To: Rob Herring , Michael Turquette , Joseph Lo , Thierry Reding , Jonathan Hunter , Peter De Schrijver , Prashant Gaikwad , Stephen Boyd Cc: devicetree@vger.kernel.org, linux-clk@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: devicetree@vger.kernel.org Timing control debug features should be disabled at a boot time, but you never now and hence it's better to disable them explicitly because some of those features are crucial for the driver to do a proper thing. Acked-by: Peter De Schrijver Signed-off-by: Dmitry Osipenko --- drivers/memory/tegra/mc.c | 3 +++ drivers/memory/tegra/mc.h | 2 ++ 2 files changed, 5 insertions(+) diff --git a/drivers/memory/tegra/mc.c b/drivers/memory/tegra/mc.c index 43819e8df95c..1bad7f238881 100644 --- a/drivers/memory/tegra/mc.c +++ b/drivers/memory/tegra/mc.c @@ -657,6 +657,9 @@ static int tegra_mc_probe(struct platform_device *pdev) } else #endif { + /* ensure that debug features are disabled */ + mc_writel(mc, 0x00000000, MC_TIMING_CONTROL_DBG); + err = tegra_mc_setup_latency_allowance(mc); if (err < 0) { dev_err(&pdev->dev, diff --git a/drivers/memory/tegra/mc.h b/drivers/memory/tegra/mc.h index 410efc4d7e7b..cd52628c2b96 100644 --- a/drivers/memory/tegra/mc.h +++ b/drivers/memory/tegra/mc.h @@ -30,6 +30,8 @@ #define MC_EMEM_ARB_OVERRIDE 0xe8 #define MC_EMEM_ARB_OVERRIDE_EACK_MASK 0x3 +#define MC_TIMING_CONTROL_DBG 0xf8 + #define MC_TIMING_CONTROL 0xfc #define MC_TIMING_UPDATE BIT(0) -- 2.22.0