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authorMikko Perttunen <mperttunen@nvidia.com>2015-03-12 17:48:03 +0300
committerThierry Reding <treding@nvidia.com>2015-05-05 12:12:17 +0300
commit73a7f0a90641b09300d47308682b674c570dd6a2 (patch)
tree2fae77ad6db5abacf35be69ed05b1dc7c670c5e4 /include/soc
parent3d9dd6fdd23695a038633f1a87aee0708fe4b8e0 (diff)
downloadlinux-73a7f0a90641b09300d47308682b674c570dd6a2.tar.xz
memory: tegra: Add EMC (external memory controller) driver
Implements functionality needed to change the rate of the memory bus clock. Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'include/soc')
-rw-r--r--include/soc/tegra/emc.h19
1 files changed, 19 insertions, 0 deletions
diff --git a/include/soc/tegra/emc.h b/include/soc/tegra/emc.h
new file mode 100644
index 000000000000..f6db33b579ec
--- /dev/null
+++ b/include/soc/tegra/emc.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2014 NVIDIA Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __SOC_TEGRA_EMC_H__
+#define __SOC_TEGRA_EMC_H__
+
+struct tegra_emc;
+
+int tegra_emc_prepare_timing_change(struct tegra_emc *emc,
+ unsigned long rate);
+void tegra_emc_complete_timing_change(struct tegra_emc *emc,
+ unsigned long rate);
+
+#endif /* __SOC_TEGRA_EMC_H__ */