Unified codebase for TX28, TX48, TX51, TX53

[karo-tx-uboot.git] / arch / arm / include / asm / arch-tegra2 / clock.h

diff --git a/arch/arm/include/asm/arch-tegra2/clock.h b/arch/arm/include/asm/arch-tegra2/clock.h
index 6b12c76e8d5383df41ea0a94c87e0d638b5b4340..1d3ae3864407c42d06f8f0018e2e1aeae2d4cb36 100644 (file)
--- a/arch/arm/include/asm/arch-tegra2/clock.h
+++ b/arch/arm/include/asm/arch-tegra2/clock.h
@@ -210,6 +210,21 @@ enum clock_osc_freq clock_get_osc_freq(void);
 unsigned long clock_start_pll(enum clock_id id, u32 divm, u32 divn,
                u32 divp, u32 cpcon, u32 lfcon);
 
+/**
+ * Read low-level parameters of a PLL.
+ *
+ * @param id   clock id to read (note: USB is not supported)
+ * @param divm returns input divider
+ * @param divn returns feedback divider
+ * @param divp returns post divider 2^n
+ * @param cpcon        returns charge pump setup control
+ * @param lfcon        returns loop filter setup control
+ *
+ * @returns 0 if ok, -1 on error (invalid clock id)
+ */
+int clock_ll_read_pll(enum clock_id clkid, u32 *divm, u32 *divn,
+                     u32 *divp, u32 *cpcon, u32 *lfcon);
+
 /*
  * Enable a clock
  *
@@ -368,6 +383,13 @@ void clock_ll_start_uart(enum periph_id periph_id);
  */
 enum periph_id clock_decode_periph_id(const void *blob, int node);
 
+/**
+ * Checks if the oscillator bypass is enabled (XOBP bit)
+ *
+ * @return 1 if bypass is enabled, 0 if not
+ */
+int clock_get_osc_bypass(void);
+
 /*
  * Checks that clocks are valid and prints a warning if not
  *