For all the commands, which do not have an entry in
xilinx_spips_num_dummies, present logic sends dummy byte when ever we
are in SNOOP_NONE state, fix it to send only if cmd requires them.
Only transmit max of 1 dummy byte(i.e 8 cycles) is a single snoop cycle.
And also convert dummy bytes to cycles (required by m25p80).
Signed-off-by: Sai Pavan Boddu <saip...@xilinx.com>
---
hw/ssi/xilinx_spips.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/hw/ssi/xilinx_spips.c b/hw/ssi/xilinx_spips.c
index 426f971..8278930 100644
--- a/hw/ssi/xilinx_spips.c
+++ b/hw/ssi/xilinx_spips.c
@@ -627,10 +627,17 @@ static void xilinx_spips_flush_txfifo(XilinxSPIPS *s)
tx_rx[i] = tx;
}
} else {
- /* Extract a dummy byte and generate dummy cycles according to the
- * link state */
tx = fifo8_pop(&s->tx_fifo);
- dummy_cycles = 8 / s->link_state;
+ if (s->cmd_dummies > 0) {
+ /* Extract a dummy byte and generate dummy cycles according to
+ * the link state */
+ dummy_cycles = (s->cmd_dummies ? 1 : 0) * 8 / s->link_state;
+ s->cmd_dummies--;
+ } else {
+ for (i = 0; i < num_effective_busses(s); ++i) {
+ tx_rx[i] = tx;
+ }
+ }
}
for (i = 0; i < num_effective_busses(s); ++i) {
--
2.7.4
