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authorJolly Shah <jolly.shah@xilinx.com>2018-10-08 20:21:46 +0200
committerMichal Simek <michal.simek@xilinx.com>2018-10-09 13:29:19 +0200
commit3fde0e16d016ecb273f0fa404b5d56b947fc0576 (patch)
tree570fc7609976fd1f275725bf63530bf177511dd8 /drivers/clk/zynqmp/clk-zynqmp.h
parentdt-bindings: clock: Add bindings for ZynqMP clock driver (diff)
downloadlinux-3fde0e16d016ecb273f0fa404b5d56b947fc0576.tar.xz
linux-3fde0e16d016ecb273f0fa404b5d56b947fc0576.zip
drivers: clk: Add ZynqMP clock driver
This patch adds CCF compliant clock driver for ZynqMP. Clock driver queries supported clock information from firmware and regiters pll and output clocks with CCF. Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com> Signed-off-by: Tejas Patel <tejasp@xilinx.com> Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com> Signed-off-by: Jolly Shah <jolly.shah@xilinx.com> Acked-by: Olof Johansson <olof@lixom.net> Reviewed-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'drivers/clk/zynqmp/clk-zynqmp.h')
-rw-r--r--drivers/clk/zynqmp/clk-zynqmp.h68
1 files changed, 68 insertions, 0 deletions
diff --git a/drivers/clk/zynqmp/clk-zynqmp.h b/drivers/clk/zynqmp/clk-zynqmp.h
new file mode 100644
index 000000000000..7ab163b67249
--- /dev/null
+++ b/drivers/clk/zynqmp/clk-zynqmp.h
@@ -0,0 +1,68 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2016-2018 Xilinx
+ */
+
+#ifndef __LINUX_CLK_ZYNQMP_H_
+#define __LINUX_CLK_ZYNQMP_H_
+
+#include <linux/spinlock.h>
+
+#include <linux/firmware/xlnx-zynqmp.h>
+
+/* Clock APIs payload parameters */
+#define CLK_GET_NAME_RESP_LEN 16
+#define CLK_GET_TOPOLOGY_RESP_WORDS 3
+#define CLK_GET_PARENTS_RESP_WORDS 3
+#define CLK_GET_ATTR_RESP_WORDS 1
+
+enum topology_type {
+ TYPE_INVALID,
+ TYPE_MUX,
+ TYPE_PLL,
+ TYPE_FIXEDFACTOR,
+ TYPE_DIV1,
+ TYPE_DIV2,
+ TYPE_GATE,
+};
+
+/**
+ * struct clock_topology - Clock topology
+ * @type: Type of topology
+ * @flag: Topology flags
+ * @type_flag: Topology type specific flag
+ */
+struct clock_topology {
+ u32 type;
+ u32 flag;
+ u32 type_flag;
+};
+
+struct clk_hw *zynqmp_clk_register_pll(const char *name, u32 clk_id,
+ const char * const *parents,
+ u8 num_parents,
+ const struct clock_topology *nodes);
+
+struct clk_hw *zynqmp_clk_register_gate(const char *name, u32 clk_id,
+ const char * const *parents,
+ u8 num_parents,
+ const struct clock_topology *nodes);
+
+struct clk_hw *zynqmp_clk_register_divider(const char *name,
+ u32 clk_id,
+ const char * const *parents,
+ u8 num_parents,
+ const struct clock_topology *nodes);
+
+struct clk_hw *zynqmp_clk_register_mux(const char *name, u32 clk_id,
+ const char * const *parents,
+ u8 num_parents,
+ const struct clock_topology *nodes);
+
+struct clk_hw *zynqmp_clk_register_fixed_factor(const char *name,
+ u32 clk_id,
+ const char * const *parents,
+ u8 num_parents,
+ const struct clock_topology *nodes);
+
+#endif