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From:   Dmitry Osipenko <digetx@gmail.com>
To:     Thierry Reding <thierry.reding@gmail.com>,
        Jonathan Hunter <jonathanh@nvidia.com>,
        Georgi Djakov <georgi.djakov@linaro.org>,
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        Michael Turquette <mturquette@baylibre.com>,
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        Mikko Perttunen <cyndis@kapsi.fi>
Cc:     =?UTF-8?q?Artur=20=C5=9Awigo=C5=84?= <a.swigon@samsung.com>,
        linux-tegra@vger.kernel.org, linux-pm@vger.kernel.org,
        linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
        devicetree@vger.kernel.org
Subject: [PATCH v4 32/37] memory: tegra20-emc: Create tegra20-devfreq device
Date:   Tue,  9 Jun 2020 16:13:59 +0300
Message-Id: <20200609131404.17523-33-digetx@gmail.com>
In-Reply-To: <20200609131404.17523-1-digetx@gmail.com>
References: <20200609131404.17523-1-digetx@gmail.com>
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The tegra20-devfreq driver provides memory frequency scaling functionality
and it uses EMC clock for the scaling. Since tegra20-devfreq is a software
driver, the device for the driver needs to be created manually. Let's do
it from EMC driver since it provides the clk rate-change functionality.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 drivers/memory/tegra/tegra20-emc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/memory/tegra/tegra20-emc.c b/drivers/memory/tegra/tegra20-emc.c
index ef0f5a69f24b..59d85e527516 100644
--- a/drivers/memory/tegra/tegra20-emc.c
+++ b/drivers/memory/tegra/tegra20-emc.c
@@ -877,6 +877,9 @@ static int tegra_emc_probe(struct platform_device *pdev)
 	tegra_emc_debugfs_init(emc);
 	tegra_emc_interconnect_init(emc);
 
+	if (IS_ENABLED(CONFIG_ARM_TEGRA20_DEVFREQ))
+		platform_device_register_simple("tegra20-devfreq", -1, NULL, 0);
+
 	/*
 	 * Don't allow the kernel module to be unloaded. Unloading adds some
 	 * extra complexity which doesn't really worth the effort in a case of
-- 
2.26.0