platform: mdm9x35: Add support for usb clocks
Add support for clocks needed to enable USB3.0
CRs-Fixed: 610350
Change-Id: I76a930b6d47f845d7f599cc9f3b2a6824de35480
diff --git a/platform/mdm9x35/acpuclock.c b/platform/mdm9x35/acpuclock.c
index ccd90eb..4af598b 100755
--- a/platform/mdm9x35/acpuclock.c
+++ b/platform/mdm9x35/acpuclock.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
@@ -31,6 +31,7 @@
#include <debug.h>
#include <reg.h>
#include <clock.h>
+#include <pm8x41.h>
#include <platform/clock.h>
#include <platform/iomap.h>
#include <platform/timer.h>
@@ -101,3 +102,72 @@
}
}
+/*
+ * Disable power collapse using GDSCR:
+ * Globally Distributed Switch Controller Register
+ */
+void clock_usb30_gdsc_enable(void)
+{
+ uint32_t reg = readl(GCC_USB30_GDSCR);
+
+ reg &= ~(0x1);
+
+ writel(reg, GCC_USB30_GDSCR);
+}
+
+/* enables usb30 clocks */
+void clock_usb30_init(void)
+{
+ int ret;
+
+ ret = clk_get_set_enable("usb30_iface_clk", 0, 1);
+ if(ret)
+ {
+ dprintf(CRITICAL, "failed to set usb30_iface_clk. ret = %d\n", ret);
+ ASSERT(0);
+ }
+
+ clock_usb30_gdsc_enable();
+
+ ret = clk_get_set_enable("usb30_master_clk", 125000000, 1);
+ if(ret)
+ {
+ dprintf(CRITICAL, "failed to set usb30_master_clk. ret = %d\n", ret);
+ ASSERT(0);
+ }
+
+ ret = clk_get_set_enable("usb30_pipe_clk", 19200000, 1);
+ if(ret)
+ {
+ dprintf(CRITICAL, "failed to set usb30_pipe_clk. ret = %d\n", ret);
+ ASSERT(0);
+ }
+
+ ret = clk_get_set_enable("usb30_aux_clk", 1000000, 1);
+ if(ret)
+ {
+ dprintf(CRITICAL, "failed to set usb30_aux_clk. ret = %d\n", ret);
+ ASSERT(0);
+ }
+
+ ret = clk_get_set_enable("usb_phy_cfg_ahb_clk", 0, 1);
+ if(ret)
+ {
+ dprintf(CRITICAL, "failed to set usb_phy_cfg_ahb_clk ret = %d\n", ret);
+ ASSERT(0);
+ }
+
+ pm8x41_lnbb_clock_ctrl(1);
+}
+
+void clock_bumpup_pipe3_clk()
+{
+ int ret = 0;
+
+ ret = clk_get_set_enable("usb30_pipe_clk", 125000000, 0);
+ if(ret)
+ {
+ dprintf(CRITICAL, "failed to set usb30_pipe_clk. ret = %d\n", ret);
+ ASSERT(0);
+ }
+}