clk: bcm2835: Move under bcm/ with other Broadcom SoC clk drivers.

[firefly-linux-kernel-4.4.55.git] / drivers / clk / bcm / clk-bcm2835.c

diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c
new file mode 100644 (file)
index 0000000..dd295e4
--- /dev/null
+++ b/drivers/clk/bcm/clk-bcm2835.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2010 Broadcom
+ * Copyright (C) 2012 Stephen Warren
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/clk/bcm2835.h>
+#include <linux/of.h>
+
+/*
+ * These are fixed clocks. They're probably not all root clocks and it may
+ * be possible to turn them on and off but until this is mapped out better
+ * it's the only way they can be used.
+ */
+void __init bcm2835_init_clocks(void)
+{
+       struct clk *clk;
+       int ret;
+
+       clk = clk_register_fixed_rate(NULL, "apb_pclk", NULL, CLK_IS_ROOT,
+                                       126000000);
+       if (IS_ERR(clk))
+               pr_err("apb_pclk not registered\n");
+
+       clk = clk_register_fixed_rate(NULL, "uart0_pclk", NULL, CLK_IS_ROOT,
+                                       3000000);
+       if (IS_ERR(clk))
+               pr_err("uart0_pclk not registered\n");
+       ret = clk_register_clkdev(clk, NULL, "20201000.uart");
+       if (ret)
+               pr_err("uart0_pclk alias not registered\n");
+
+       clk = clk_register_fixed_rate(NULL, "uart1_pclk", NULL, CLK_IS_ROOT,
+                                       125000000);
+       if (IS_ERR(clk))
+               pr_err("uart1_pclk not registered\n");
+       ret = clk_register_clkdev(clk, NULL, "20215000.uart");
+       if (ret)
+               pr_err("uart1_pclk alias not registered\n");
+}