From 95099d4622f8cb224d94e314c7a8e0df60b13f87 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 09 Dec 2023 08:38:01 +0000
Subject: [PATCH] enable docker ppp
---
kernel/arch/arm/mach-imx/cpu-imx27.c | 25 ++++++++++---------------
1 files changed, 10 insertions(+), 15 deletions(-)
diff --git a/kernel/arch/arm/mach-imx/cpu-imx27.c b/kernel/arch/arm/mach-imx/cpu-imx27.c
index 8d2ae40..bf70e13 100644
--- a/kernel/arch/arm/mach-imx/cpu-imx27.c
+++ b/kernel/arch/arm/mach-imx/cpu-imx27.c
@@ -1,20 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright 2007 Freescale Semiconductor, Inc. All Rights Reserved.
* Copyright 2008 Juergen Beisert, kernel@pengutronix.de
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
- * MA 02110-1301, USA.
*/
/*
@@ -22,6 +9,7 @@
*/
#include <linux/io.h>
+#include <linux/of_address.h>
#include <linux/module.h>
#include "hardware.h"
@@ -30,16 +18,23 @@
static int mx27_cpu_partnumber;
#define SYS_CHIP_ID 0x00 /* The offset of CHIP ID register */
+#define SYSCTRL_OFFSET 0x800 /* Offset from CCM base address */
static int mx27_read_cpu_rev(void)
{
+ void __iomem *ccm_base;
+ struct device_node *np;
u32 val;
+
+ np = of_find_compatible_node(NULL, NULL, "fsl,imx27-ccm");
+ ccm_base = of_iomap(np, 0);
+ BUG_ON(!ccm_base);
/*
* now we have access to the IO registers. As we need
* the silicon revision very early we read it here to
* avoid any further hooks
*/
- val = imx_readl(MX27_IO_ADDRESS(MX27_SYSCTRL_BASE_ADDR + SYS_CHIP_ID));
+ val = imx_readl(ccm_base + SYSCTRL_OFFSET + SYS_CHIP_ID);
mx27_cpu_partnumber = (int)((val >> 12) & 0xFFFF);
--
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