sh: pci: Support secondary FPGA-driven PCIe clocks on SDK7786.

The SDK7786 FPGA has secondary control over the PCIe clocks, specifically
relating to the slots and oscillator. This ties the FPGA clocks in to the
clock framework and balances the refcounting similar to how the primary
on-chip clocks are managed. While the on-chip clocks are per-port, the
FPGA clock enable/disable is global for the entire block.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/sh/include/mach-sdk7786/mach/fpga.h b/arch/sh/include/mach-sdk7786/mach/fpga.h
index 8cc784147b96..b7d93699b679 100644
--- a/arch/sh/include/mach-sdk7786/mach/fpga.h
+++ b/arch/sh/include/mach-sdk7786/mach/fpga.h
@@ -39,7 +39,7 @@
 #define  PCIECR_PRST3           BIT(11) /* slot 3 card present */
 #define  PCIECR_PRST2           BIT(10) /* slot 2 card present */
 #define  PCIECR_PRST1           BIT(9)  /* slot 1 card present */
-#define  PCIECR_CLKEN           BIT(4)
+#define  PCIECR_CLKEN           BIT(4)  /* oscillator enable */
 
 #define FAER            0x150
 #define USRGPIR         0x160