doc: imx8mp_evk: Use in-tree build in the example

To make it consistent with the instructions from other NXP imx8m boards,
such as imx8mm-evk and imx8mn-evk, use U-Boot in-tree build in the
examples.

Signed-off-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Peng Fan <peng.fan@nxp.com>

diff --git a/doc/board/nxp/imx8mp_evk.rst b/doc/board/nxp/imx8mp_evk.rst
index e106c3c71872e6fec431a4f0d7ff8dbc2f972fe8..72175dbe78f9ab7eac1a4854cde3ecbfa54e6160 100644 (file)
--- a/doc/board/nxp/imx8mp_evk.rst
+++ b/doc/board/nxp/imx8mp_evk.rst
@@ -37,20 +37,22 @@ Build U-Boot
 
 .. code-block:: bash
 
+Note: builddir is U-Boot build directory (source directory for in-tree builds).
+
    $ export CROSS_COMPILE=aarch64-poky-linux-
    $ make O=build imx8mp_evk_defconfig
-   $ cp ../imx-atf/build/imx8mp/release/bl31.bin ./build/bl31.bin
-   $ cp ../firmware-imx-8.10/firmware/ddr/synopsys/lpddr4_pmu_train_1d_dmem_202006.bin ./build/
-   $ cp ../firmware-imx-8.10/firmware/ddr/synopsys/lpddr4_pmu_train_1d_imem_202006.bin ./build/
-   $ cp ../firmware-imx-8.10/firmware/ddr/synopsys/lpddr4_pmu_train_2d_dmem_202006.bin ./build/
-   $ cp ../firmware-imx-8.10/firmware/ddr/synopsys/lpddr4_pmu_train_2d_imem_202006.bin ./build/
-   $ make O=build
+   $ cp ../imx-atf/build/imx8mp/release/bl31.bin $(builddir)
+   $ cp ../firmware-imx-8.10/firmware/ddr/synopsys/lpddr4_pmu_train_1d_dmem_202006.bin $(builddir)
+   $ cp ../firmware-imx-8.10/firmware/ddr/synopsys/lpddr4_pmu_train_1d_imem_202006.bin $(builddir)
+   $ cp ../firmware-imx-8.10/firmware/ddr/synopsys/lpddr4_pmu_train_2d_dmem_202006.bin $(builddir)
+   $ cp ../firmware-imx-8.10/firmware/ddr/synopsys/lpddr4_pmu_train_2d_imem_202006.bin $(builddir)
+   $ make
 
 Burn the flash.bin to the MicroSD card at offset 32KB:
 
 .. code-block:: bash
 
-   $sudo dd if=build/flash.bin of=/dev/sd[x] bs=1K seek=32 conv=notrunc; sync
+   $ sudo dd if=flash.bin of=/dev/sd[x] bs=1K seek=32 conv=notrunc; sync
 
 Boot
 ----