From 6b482b94dac9d867a81d74c3293e407d09d4dae9 Mon Sep 17 00:00:00 2001
From: Michael Ossmann <mike@ossmann.com>
Date: Thu, 12 Dec 2013 15:47:00 -0700
Subject: [PATCH] set crystal load capacitance to 8 pF

---
 firmware/common/si5351c.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/firmware/common/si5351c.c b/firmware/common/si5351c.c
index 7b9cc7a3..ed0602bc 100644
--- a/firmware/common/si5351c.c
+++ b/firmware/common/si5351c.c
@@ -103,11 +103,11 @@ void si5351c_power_down_all_clocks()
 /*
  * Register 183: Crystal Internal Load Capacitance
  * Reads as 0xE4 on power-up
- * Set to 10pF (until I find out what loading the crystal/PCB likes best)
+ * Set to 8pF based on crystal specs and HackRF One testing
  */
 void si5351c_set_crystal_configuration()
 {
-	uint8_t data[] = { 183, 0xE4 };
+	uint8_t data[] = { 183, 0x80 };
 	si5351c_write(data, sizeof(data));
 }