From d37d55b5bddb3391d38c1ac2e9af05490f25ecd2 Mon Sep 17 00:00:00 2001
From: Andreas Moltumyr <andreas.moltumyr@nordicsemi.no>
Date: Fri, 4 Oct 2024 16:12:28 +0200
Subject: [PATCH] lib: nrf_modem_lib: set data cache alignment to 32 bytes

The nRF9230 application core has data cache with a
cache line width of 32 bytes. Set the dcache alignment of
ICMsg pbuf to 32 bytes to align.

Signed-off-by: Andreas Moltumyr <andreas.moltumyr@nordicsemi.no>
(cherry picked from commit 6a08601d3a49a52f310a271eac148edb5ac81a7b)
---
 lib/nrf_modem_lib/nrf_modem_os_rpc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/nrf_modem_lib/nrf_modem_os_rpc.c b/lib/nrf_modem_lib/nrf_modem_os_rpc.c
index e6a1bb1740d2..033299e4f9e7 100644
--- a/lib/nrf_modem_lib/nrf_modem_os_rpc.c
+++ b/lib/nrf_modem_lib/nrf_modem_os_rpc.c
@@ -18,7 +18,9 @@
 #include <zephyr/ipc/icmsg.h>
 #include <zephyr/ipc/pbuf.h>
 
-#define DCACHE_LINE_SIZE 0
+#define DCACHE_LINE_SIZE (CONFIG_DCACHE_LINE_SIZE)
+BUILD_ASSERT(DCACHE_LINE_SIZE == 32
+	     "Unexpected data cache line size " STRINGIFY(DCACHE_LINE_SIZE) ", expected 32");
 
 /** Structure to hold pbuf configuration and data. */
 struct nrf_modem_pbuf {