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path: root/drivers/clk/at91/pmc.c
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Diffstat (limited to 'drivers/clk/at91/pmc.c')
-rw-r--r--drivers/clk/at91/pmc.c71
1 files changed, 71 insertions, 0 deletions
diff --git a/drivers/clk/at91/pmc.c b/drivers/clk/at91/pmc.c
new file mode 100644
index 0000000..a08d7e8
--- /dev/null
+++ b/drivers/clk/at91/pmc.c
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2016 Atmel Corporation
+ * Wenyou.Yang <wenyou.yang@atmel.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <clk-uclass.h>
+#include <dm/device.h>
+#include <dm/lists.h>
+#include <dm/root.h>
+#include "pmc.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static int at91_pmc_bind(struct udevice *dev)
+{
+ return dm_scan_fdt_node(dev, gd->fdt_blob, dev->of_offset, false);
+}
+
+static const struct udevice_id at91_pmc_match[] = {
+ { .compatible = "atmel,sama5d2-pmc" },
+ {}
+};
+
+U_BOOT_DRIVER(at91_pmc) = {
+ .name = "at91-pmc-core",
+ .id = UCLASS_CLK,
+ .of_match = at91_pmc_match,
+ .bind = at91_pmc_bind,
+};
+
+int at91_pmc_core_probe(struct udevice *dev)
+{
+ struct pmc_platdata *plat = dev_get_platdata(dev);
+
+ dev = dev_get_parent(dev);
+
+ plat->reg_base = (struct at91_pmc *)dev_get_addr_ptr(dev);
+
+ return 0;
+}
+
+int at91_pmc_clk_node_bind(struct udevice *dev)
+{
+ const void *fdt = gd->fdt_blob;
+ int offset = dev->of_offset;
+ const char *name;
+ int ret;
+
+ for (offset = fdt_first_subnode(fdt, offset);
+ offset > 0;
+ offset = fdt_next_subnode(fdt, offset)) {
+ name = fdt_get_name(fdt, offset, NULL);
+ if (!name)
+ return -EINVAL;
+
+ ret = device_bind_driver_to_node(dev, "clk", name,
+ offset, NULL);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+U_BOOT_DRIVER(clk_generic) = {
+ .id = UCLASS_CLK,
+ .name = "clk",
+};