The TZ1090 High End Peripheral (HEP) register region controls several
clocks for the HEP peripherals.
The set up is pretty straight forward, with only a clock gate bank
(HEP_CLK_EN) needing to be configured.
Signed-off-by: James Hogan <james.hogan@xxxxxxxxxx>
Cc: Mike Turquette <mturquette@xxxxxxxxxx>
Cc: linux-metag@xxxxxxxxxxxxxxx
---
Changes since v1 (patch 15):
- New patch.
- Convert explicit DT representation of clock infrastructure using
generic bindings to several TZ1090 specific bindings representing
groups of TZ1090 clocks.
---
drivers/clk/tz1090/Makefile | 1 +
drivers/clk/tz1090/clk-tz1090-hep.c | 46 +++++++++++++++++++++++++++++++++++++
2 files changed, 47 insertions(+)
create mode 100644 drivers/clk/tz1090/clk-tz1090-hep.c
diff --git a/drivers/clk/tz1090/Makefile b/drivers/clk/tz1090/Makefile
index 873a8f6..1d3cd32 100644
--- a/drivers/clk/tz1090/Makefile
+++ b/drivers/clk/tz1090/Makefile
@@ -7,5 +7,6 @@ obj-y += clk-tz1090-gate-bank.o
obj-y += clk-tz1090-mux-bank.o
obj-y += clk-tz1090-pll.o
+obj-y += clk-tz1090-hep.o
obj-y += clk-tz1090-pdc.o
obj-y += clk-tz1090-top.o
diff --git a/drivers/clk/tz1090/clk-tz1090-hep.c b/drivers/clk/tz1090/clk-tz1090-hep.c
new file mode 100644
index 0000000..e5585b4
--- /dev/null
+++ b/drivers/clk/tz1090/clk-tz1090-hep.c
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2013-2014 Imagination Technologies Ltd.
+ *
+ * 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.
+ *
+ * TZ1090 High End Peripheral (HEP) Clocks
+ */
+
+#include <dt-bindings/clock/tz1090-hep.h>
+
+#include "clk.h"
+
+/* Register offsets into high end peripheral memory region */
+#define HEP_CLK_EN 0x04
+
+/*
+ * CR_HEP_CLK_EN
+ * =============
+ *
+ * sys -+--[ 2d_en ]--- 0 sys_2d
+ * sys_x2_undeleted -|--[ ddr_en ]--- 1 ddr_en
+ * sys `--[ pdp_pdi_en ]--- 2 sys_pdp
+ */
+GATE_BANK(tz1090_hep_clken, 0, HEP_CLK_EN,
+ /* bit in out */
+ GATE( 0, "@sys", "sys_2d")
+ GATE( 1, "@sys_x2_undeleted", "ddr_en")
+ GATE( 2, "@sys", "sys_pdp")
+ /* bits 3..31 unused */
+);
+
+static void __init tz1090_hep_cru_init(struct device_node *np)
+{
+ struct tz1090_clk_provider *p;
+
+ p = tz1090_clk_alloc_provider(np, CLK_HEP_MAX);
+ if (!p)
+ return;
+
+ tz1090_clk_register_gate_bank(p, &tz1090_hep_clken);
+
+ tz1090_clk_register_provider(p);
+}
+CLK_OF_DECLARE(tz1090_hep_cru, "img,tz1090-hep-cru", tz1090_hep_cru_init);
--
2.0.4
--
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