sorte: firmware: master: fix the way of testing an active link using mdio

* re-check MDIO_PHY_CONFIG in the branching as link may not be initially active
* compare with all the four bytes of ICSS_MDIO_LINK rather than b0, since
  MDIO_ALIVE supports all the 32 bits

Signed-off-by: Hongmei Gou <a0271529@ti.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/example/apps/sorte/firmware/src/master/firm_main.asm b/example/apps/sorte/firmware/src/master/firm_main.asm
index 7793ef0..fa4609f 100644
--- a/example/apps/sorte/firmware/src/master/firm_main.asm
+++ b/example/apps/sorte/firmware/src/master/firm_main.asm
@@ -135,12 +135,10 @@ firm_main:
 

 ; starting with idle state

 ; test if there is an active link on the port using mdio interface

-

-; test if there is an active link on the port using mdio interface

-    lbco    &TEMP_REG_2.b0, ICSS_SHARED_RAM_CONST, MDIO_PHY_CONFIG_OFFSET, 1

 IDLE_WAIT_FOR_LINK_ACTIVE:

+    lbco    &TEMP_REG_2.b0, ICSS_SHARED_RAM_CONST, MDIO_PHY_CONFIG_OFFSET, 1

     lbco    &TEMP_REG_1, ICSS_MDIO_CONST, ICSS_MDIO_LINK, 4

-    qbbc    IDLE_WAIT_FOR_LINK_ACTIVE, TEMP_REG_1.b0, TEMP_REG_2.b0

+    qbbc    IDLE_WAIT_FOR_LINK_ACTIVE, TEMP_REG_1, TEMP_REG_2.b0

 

 ; check if enabled, enabling done at startup of pru firmware.

        lbco    &TEMP_REG_1.b0, PRU0_DMEM_CONST, CTRL_REG_OFFSET , 1