[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20190811210043.20122-14-digetx@gmail.com>
Date: Mon, 12 Aug 2019 00:00:41 +0300
From: Dmitry Osipenko <digetx@...il.com>
To: Rob Herring <robh+dt@...nel.org>,
Michael Turquette <mturquette@...libre.com>,
Joseph Lo <josephl@...dia.com>,
Thierry Reding <thierry.reding@...il.com>,
Jonathan Hunter <jonathanh@...dia.com>,
Peter De Schrijver <pdeschrijver@...dia.com>,
Prashant Gaikwad <pgaikwad@...dia.com>,
Stephen Boyd <sboyd@...nel.org>
Cc: devicetree@...r.kernel.org, linux-clk@...r.kernel.org,
linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v10 13/15] memory: tegra: Ensure timing control debug features are disabled
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 <pdeschrijver@...dia.com>
Signed-off-by: Dmitry Osipenko <digetx@...il.com>
---
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
Powered by blists - more mailing lists