From ff96bf903befc255814e083c77da619af2b19a9b Mon Sep 17 00:00:00 2001
From: Astro <astro@spaceboyz.net>
Date: Wed, 6 Nov 2019 23:04:35 +0100
Subject: [PATCH] zynq::ddr: only enable_ddr if no clock yet

that's only an issue for the cora z7
---
 src/zynq/ddr/mod.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/zynq/ddr/mod.rs b/src/zynq/ddr/mod.rs
index fba49f9d..282c114c 100644
--- a/src/zynq/ddr/mod.rs
+++ b/src/zynq/ddr/mod.rs
@@ -36,8 +36,11 @@ impl DdrRam {
     /// 10.6.1 DDR Clock Initialization
     fn clock_setup() -> CpuClocks {
         let clocks = CpuClocks::get();
-        CpuClocks::enable_ddr(clocks.arm);
+        if clocks.ddr == 0 {
+            CpuClocks::enable_ddr(clocks.arm);
+        }
         let clocks = CpuClocks::get();
+        println!("Clocks: {:?}", clocks);
 
         let ddr3x_clk_divisor = ((clocks.ddr - 1) / DDR_FREQ + 1).min(255) as u8;
         let ddr2x_clk_divisor = 3 * ddr3x_clk_divisor / 2;