From 438f38de84c9cb15c4e6c0ce003abdcb7d4b04db Mon Sep 17 00:00:00 2001
From: Ciro Santilli <ciro.santilli@gmail.com>
Date: Wed, 12 Jul 2017 09:39:41 +0100
Subject: [PATCH] Mention devmem2 on platform device

---
 kernel_module/platform_device.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/kernel_module/platform_device.c b/kernel_module/platform_device.c
index a7ecdab..c4e0d9e 100644
--- a/kernel_module/platform_device.c
+++ b/kernel_module/platform_device.c
@@ -9,6 +9,12 @@ Expected outcome after insmod:
 
 - QEMU reports MMIO with printfs
 - IRQs are generated and handled by this module, which logs to dmesg
+
+Also without insmodding this module, try:
+
+	devmem2 0x101e9000 w 0x12345678
+
+which touches from userland through /dev/mem.
 */
 
 #include <linux/init.h>