[PATCH] arm: imx: imx8mm: clock: make debug output more descriptive

[Andrey Zhizhikin]

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 at leica-geosystems.com>
Cc: Stefano Babic <sbabic at denx.de>
Cc: Fabio Estevam <festevam at gmail.com>
Cc: "NXP i.MX U-Boot Team" <uboot-imx at nxp.com>
Cc: Peng Fan <peng.fan at nxp.com>
Cc: Simon Glass <sjg at chromium.org>
Cc: Ye Li <ye.li at nxp.com>
---
 arch/arm/mach-imx/imx8m/clock_imx8mm.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mach-imx/imx8m/clock_imx8mm.c b/arch/arm/mach-imx/imx8m/clock_imx8mm.c
index 7d0f564a24..8b0c19cec8 100644
--- 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;
 	}
 
-- 
2.25.1