[PATCH master 4/4] ARM: i.MX8M: imx8mn-evk: disable DDRC memory detection

[Ahmad Fatoum]

While detection now seems to work for all other supported boards, it is
no longer correct for imx8mn-evk with LPDDR4. Until that's resolved,
disable the dynamic detection. Upstream device tree has a size of 2G
already.

Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
---
 arch/arm/boards/nxp-imx8mn-evk/board.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm/boards/nxp-imx8mn-evk/board.c b/arch/arm/boards/nxp-imx8mn-evk/board.c
index 3c478d5f7088..07e197ccedd2 100644
--- a/arch/arm/boards/nxp-imx8mn-evk/board.c
+++ b/arch/arm/boards/nxp-imx8mn-evk/board.c
@@ -57,6 +57,13 @@ static int nxp_imx8mn_evk_init(void)
 	phy_register_fixup_for_uid(PHY_ID_AR8031, AR_PHY_ID_MASK,
 				   ar8031_phy_fixup);
 
+	/* FIXME: DDRC driver detects 4G instead of 2G on LPDDR4 board,
+	 * perhaps because we leave something uninitialized in the DDRC
+	 * setup.  Until that's resolved, disable dynamic detection and
+	 * use only memory size specified in DT
+	 */
+	imx_esdctl_disable(1);
+
 	return 0;
 }
 coredevice_initcall(nxp_imx8mn_evk_init);
-- 
2.30.2