arm: imx: imx8mm: clock: make debug output more descriptive

Clock initialization functionality has ambitious debug messages, which are
printed out when failures are triggered during execution:
- Separate frequency table lookup functions have the the same output that
  makes it impossible to understand which function failed and produced the
  output
- PLL decoding routine has a generic debug statement printed, which does
  not state the actual value failed to be found

Extend the output for both cases with prefixing table lookup functions
output with function name, and report the failed value in PLL decoding
routine.

Signed-off-by: Andrey Zhizhikin <andrey.zhizhikin@leica-geosystems.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: "NXP i.MX U-Boot Team" <uboot-imx@nxp.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Ye Li <ye.li@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>

diff --git a/arch/arm/mach-imx/imx8m/clock_imx8mm.c b/arch/arm/mach-imx/imx8m/clock_imx8mm.c
index 65d476e..6f45d74 100644 (file)
--- a/arch/arm/mach-imx/imx8m/clock_imx8mm.c
+++ b/arch/arm/mach-imx/imx8m/clock_imx8mm.c
@@ -72,7 +72,7 @@ static int fracpll_configure(enum pll_clocks pll, u32 freq)
        }
 
        if (i == ARRAY_SIZE(imx8mm_fracpll_tbl)) {
-               printf("No matched freq table %u\n", freq);
+               printf("%s: No matched freq table %u\n", __func__, freq);
                return -EINVAL;
        }
 
@@ -148,7 +148,7 @@ void dram_enable_bypass(ulong clk_val)
        }
 
        if (i == ARRAY_SIZE(imx8mm_dram_bypass_tbl)) {
-               printf("No matched freq table %lu\n", clk_val);
+               printf("%s: No matched freq table %lu\n", __func__, clk_val);
                return;
        }
 
@@ -646,7 +646,7 @@ static u32 decode_fracpll(enum clk_root_src frac_pll)
                pll_fdiv_ctl1 = readl(&ana_pll->video_pll1_fdiv_ctl1);
                break;
        default:
-               printf("Not supported\n");
+               printf("Unsupported clk_root_src %d\n", frac_pll);
                return 0;
        }