[PATCH v2 1/4] ARM: dts: imx: Make DRAM coding GPIOs available before relocation on Data Modul i.MX8M Mini/Plus eDM SBC

Marek Vasut marex at denx.de
Fri Nov 29 01:13:53 CET 2024


The DRAM configuration GPIO straps must be accessible in SPL and before
relocation because the GPIOs are sampled both in U-Boot SPL as well as early
on in U-Boot proper. The already present bootph-pre-ram DT property made the
GPIO controllers available in SPL, but not early on in U-Boot proper, which
made gpio_request_list_by_name_nodev() in board dmo_get_memcfg() fail. Add
missing bootph-some-ram DT property to all GPIO controllers which are
referenced in dmo,ram-coding-gpios DT property to make those GPIO
controllers available early in U-Boot proper as well.

Fixes: 8c103c33fb14 ("dm: dts: Convert driver model tags to use new schema")
Signed-off-by: Marek Vasut <marex at denx.de>
---
Cc: "NXP i.MX U-Boot Team" <uboot-imx at nxp.com>
Cc: Fabio Estevam <festevam at gmail.com>
Cc: Quentin Schulz <quentin.schulz at cherry.de>
Cc: Sean Anderson <seanga2 at gmail.com>
Cc: Simon Glass <sjg at chromium.org>
Cc: Stefano Babic <sbabic at denx.de>
Cc: Tom Rini <trini at konsulko.com>
Cc: u-boot at lists.denx.de
---
NOTE: For v2025.01
---
V2: Switch from bootph-all which covers TPL as well to bootph-some-ram
    which covers only U-Boot pre-reloc phase
---
 arch/arm/dts/imx8mm-data-modul-edm-sbc-u-boot.dtsi | 1 +
 arch/arm/dts/imx8mp-data-modul-edm-sbc-u-boot.dtsi | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/arch/arm/dts/imx8mm-data-modul-edm-sbc-u-boot.dtsi b/arch/arm/dts/imx8mm-data-modul-edm-sbc-u-boot.dtsi
index a235e088fa4..fb6951026d9 100644
--- a/arch/arm/dts/imx8mm-data-modul-edm-sbc-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-data-modul-edm-sbc-u-boot.dtsi
@@ -77,6 +77,7 @@
 
 &gpio2 {
 	bootph-pre-ram;
+	bootph-some-ram;
 
 	dsi-reset-hog {
 		bootph-pre-ram;
diff --git a/arch/arm/dts/imx8mp-data-modul-edm-sbc-u-boot.dtsi b/arch/arm/dts/imx8mp-data-modul-edm-sbc-u-boot.dtsi
index 805b5f57955..1e82e718b8f 100644
--- a/arch/arm/dts/imx8mp-data-modul-edm-sbc-u-boot.dtsi
+++ b/arch/arm/dts/imx8mp-data-modul-edm-sbc-u-boot.dtsi
@@ -64,6 +64,7 @@
 
 &gpio3 {
 	bootph-pre-ram;
+	bootph-some-ram;
 
 	bl-enable-hog {
 		bootph-pre-ram;
@@ -92,6 +93,7 @@
 
 &gpio4 {
 	bootph-pre-ram;
+	bootph-some-ram;
 
 	dsi-reset-hog {
 		bootph-pre-ram;
-- 
2.45.2



More information about the U-Boot mailing list