imx: imx8mq: mxc_get_clock for MXC_I2C_CLK is missing

[Heiko Thiery <heiko.thiery@gmail.com>]

Hi Peng,

I faced an issue with the I2C bus speed in SPL for the imx8mq. I
figured out that the bus frequency is set to about 1MHz. While digging
into that I found that the clk ID for the I2C is not returned for the
imx8mq correctly.

Can you confirm that this is missing here.

This is what I added and now it looks better.

diff --git a/arch/arm/mach-imx/imx8m/clock_imx8mq.c
b/arch/arm/mach-imx/imx8m/clock_imx8mq.c
index 60e2218a3c..9e45ffd66b 100644
--- a/arch/arm/mach-imx/imx8m/clock_imx8mq.c
+++ b/arch/arm/mach-imx/imx8m/clock_imx8mq.c
@@ -363,6 +363,12 @@ unsigned int mxc_get_clock(enum mxc_clock clk)
                return get_root_clk(USDHC1_CLK_ROOT);
        case MXC_ESDHC2_CLK:
                return get_root_clk(USDHC2_CLK_ROOT);
+       case MXC_I2C_CLK:
+               return get_root_clk(I2C1_CLK_ROOT);
+       case MXC_UART_CLK:
+               return get_root_clk(UART1_CLK_ROOT);
+       case MXC_QSPI_CLK:
+               return get_root_clk(QSPI_CLK_ROOT);
        default:
                return get_root_clk(clk);
        }


-- 
Heiko