Increase HyperRAM clock frequency

dv/verilator/sonata_system.cc

@@ -77,8 +77,8 @@ int SonataSystem::Setup(int argc, char **argv, bool &exit_app) {
   // Note: calculate the period of the higher frequency clock first because
   // the period of the 'hr' reference clock must be exactly 3 times longer
   // to maintain the phase relationship.
-  uint32_t hr3x_hperiod = (micro + 599u) / 600u;  // 300MHz cycle
-  uint32_t hr_hperiod = 3 * hr3x_hperiod;  // 100MHz cycle
+  uint32_t hr3x_hperiod = (micro + 1199u) / 1200u;  // 600MHz cycle
+  uint32_t hr_hperiod = 3 * hr3x_hperiod;  // 200MHz cycle
 
   // The HyperRAM requires a clock that is phase-shifted by 90 degress.
   uint32_t hr90p_offset = hr_hperiod / 2;

dv/verilator/top_verilator.sv

@@ -27,7 +27,7 @@ module top_verilator #(
   // System clock frequency.
   localparam int unsigned SysClkFreq = 40_000_000;
   // HyperRAM clock frequency.
-  localparam int unsigned HyperRAMClkFreq  = 100_000_000;
+  localparam int unsigned HyperRAMClkFreq  = 200_000_000;
   localparam int unsigned BaudRate   = 921_600;
   // Number of CHERI error LEDs.
   localparam int unsigned CheriErrWidth = 9;

rtl/fpga/clkgen_sonata.sv

@@ -5,7 +5,7 @@
 module clkgen_sonata  #(
   // System Clock Frequency is parameterised, allowing it to be adjusted.
   parameter int unsigned SysClkFreq      =  50_000_000,
-  parameter int unsigned HyperRAMClkFreq = 100_000_000,
+  parameter int unsigned HyperRAMClkFreq = 200_000_000,
 
   // Frequency of IO_CLK input on the FPGA board.
   parameter int unsigned IOClkFreq       =  25_000_000

rtl/fpga/top_sonata.sv

@@ -218,7 +218,7 @@ module top_sonata
 
   // System clock frequency.
   parameter int unsigned SysClkFreq      =  40_000_000;
-  parameter int unsigned HyperRAMClkFreq = 100_000_000;
+  parameter int unsigned HyperRAMClkFreq = 200_000_000;
 
   parameter SRAMInitFile    = "";
 

rtl/ip/hyperram/rtl/hbmc_tl_top.sv

@@ -112,7 +112,7 @@ module hbmc_tl_top import tlul_pkg::*; #(
      into the slower clock domain, it can take 4 system clock cycles to collect the first word.
   */
   localparam int unsigned UDataWidth = top_pkg::TL_DW;
-  localparam int unsigned UFIFODepth = 1 << (Log2BurstLen - ABIT);
+  localparam int unsigned UFIFODepth = 2 << (Log2BurstLen - ABIT);
 
   /* The Downstream FIFO to the HyperRAM controller must be wide enough and deep enough to
    * accommodate all of the write data for a burst. The write coealescing logic in `hyperram_wrbuf`

rtl/system/sonata_system.sv

@@ -12,7 +12,7 @@ module sonata_system
   parameter int unsigned CheriErrWidth   = 9,
   parameter string SRAMInitFile          = "",
   parameter int unsigned SysClkFreq      = 30_000_000,
-  parameter int unsigned HyperRAMClkFreq = 100_000_000
+  parameter int unsigned HyperRAMClkFreq = 200_000_000
 ) (
   // Main system clock and reset
   input logic                      clk_sys_i,