armv8/fsl-lsch3: Suppress spurious warning on Layerscape CPUs

NXP/Freescale Layerscape CPUs support high-speed serial interfaces (SERDES)
that can be configured for the application. Interfaces not used by the
application can be set to protocol 0 to turn them off and save power, but
U-Boot would emit a warning that 0 was invalid for a SERDES protocol on
boot. Replace the warning text with a notice that the SERDES is disabled.

Signed-off-by: Stephen Carlson <stcarlso@linux.microsoft.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>

diff --git a/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch3_serdes.c b/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch3_serdes.c
index fad7a935662d61b9f6f983e6972bf9df6bd52b40..181bd9c1b4e5d639d81283bce37a22635f492392 100644 (file)
--- a/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch3_serdes.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch3_serdes.c
@@ -147,10 +147,14 @@ void serdes_init(u32 sd, u32 sd_addr, u32 rcwsr, u32 sd_prctl_mask,
        cfg >>= sd_prctl_shift;
 
        cfg = serdes_get_number(sd, cfg);
-       printf("Using SERDES%d Protocol: %d (0x%x)\n", sd + 1, cfg, cfg);
+       if (cfg == 0) {
+               printf("SERDES%d is disabled\n", sd + 1);
+       } else {
+               printf("Using SERDES%d Protocol: %d (0x%x)\n", sd + 1, cfg, cfg);
 
-       if (!is_serdes_prtcl_valid(sd, cfg))
-               printf("SERDES%d[PRTCL] = 0x%x is not valid\n", sd + 1, cfg);
+               if (!is_serdes_prtcl_valid(sd, cfg))
+                       printf("SERDES%d[PRTCL] = 0x%x is not valid\n", sd + 1, cfg);
+       }
 
        for (lane = 0; lane < SRDS_MAX_LANES; lane++) {
                enum srds_prtcl lane_prtcl = serdes_get_prtcl(sd, cfg, lane);