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imx-atf: enable access to GPIO1 port on i.MX95 

GPIO1 port access was not enabled on ATF because NXP
reserved it to have exclusive access from the secure
world on their EVK.

Signed-off-by: Hector Palacios <hector.palacios@digi.com>

https://onedigi.atlassian.net/browse/DEL-9839
This commit is contained in:
Hector Palacios 2025-11-24 09:33:39 +01:00
parent 3b6796e233
commit db74634234
2 changed files with 31 additions and 0 deletions
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30
meta-digi-arm/dynamic-layers/freescale-layer/recipes-bsp/imx-atf/imx-atf/0010-ccimx95-enable-non-secure-non-privilege-access-to-GP.patch Normal file
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@ -0,0 +1,30 @@
From: Hector Palacios <hector.palacios@digi.com>
Date: Fri, 21 Nov 2025 11:30:35 +0100
Subject: [PATCH] ccimx95: enable non-secure, non-privilege access to GPIO1
GPIO1 port is reserved on NXP EVK but we want to enable
full access to the port from the non-secure world.
Signed-off-by: Hector Palacios <hector.palacios@digi.com>
https://onedigi.atlassian.net/browse/DEL-9839
---
plat/imx/imx95/imx95_bl31_setup.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/plat/imx/imx95/imx95_bl31_setup.c b/plat/imx/imx95/imx95_bl31_setup.c
index 175a78a20021..fcf41a0ffa5b 100644
--- a/plat/imx/imx95/imx95_bl31_setup.c
+++ b/plat/imx/imx95/imx95_bl31_setup.c
@@ -108,6 +108,11 @@ void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
void bl31_plat_arch_setup(void)
{
/* Assign all the GPIO pins to non-secure world by default */
+ mmio_write_32(GPIO1_BASE + 0x10, 0xffffffff);
+ mmio_write_32(GPIO1_BASE + 0x14, 0x3);
+ mmio_write_32(GPIO1_BASE + 0x18, 0xffffffff);
+ mmio_write_32(GPIO1_BASE + 0x1c, 0x3);
+
mmio_write_32(GPIO2_BASE + 0x10, 0xffffffff);
mmio_write_32(GPIO2_BASE + 0x14, 0x3);
mmio_write_32(GPIO2_BASE + 0x18, 0xffffffff);

1
meta-digi-arm/dynamic-layers/freescale-layer/recipes-bsp/imx-atf/imx-atf_%.bbappend
View File

@ -12,6 +12,7 @@ SRC_URI:append:dey = " \
file://0007-imx93-bring-back-ELE-clock-workaround-for-soc-revisi.patch \
file://0008-ccimx91-use-UART6-for-the-default-console.patch \
file://0009-ccimx95-set-DVK-console-to-LPUART6.patch \
file://0010-ccimx95-enable-non-secure-non-privilege-access-to-GP.patch \
"
BOOT_TOOLS = "imx-boot-tools"