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ARM: vf610: report soc info via soc device 

The patch adds plumbing to soc device info code necessary to support
Vybrid devices. Use case in mind for this is CAAM driver, which
utilizes said API.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-imx@nxp.com
Tested-by: Chris Healy <cphealy@gmail.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Andrey Smirnov 2020-03-26 10:42:32 -07:00 committed by Shawn Guo
parent 8f3d9f3542
commit dceb213ca4
3 changed files with 75 additions and 0 deletions
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16
arch/arm/mach-imx/cpu.c
View File

@ -172,6 +172,22 @@ struct device * __init imx_soc_device_init(void)
ocotp_compat = "fsl,imx7ulp-ocotp";
soc_id = "i.MX7ULP";
break;
case MXC_CPU_VF500:
ocotp_compat = "fsl,vf610-ocotp";
soc_id = "VF500";
break;
case MXC_CPU_VF510:
ocotp_compat = "fsl,vf610-ocotp";
soc_id = "VF510";
break;
case MXC_CPU_VF600:
ocotp_compat = "fsl,vf610-ocotp";
soc_id = "VF600";
break;
case MXC_CPU_VF610:
ocotp_compat = "fsl,vf610-ocotp";
soc_id = "VF610";
break;
default:
soc_id = "Unknown";
}

53
arch/arm/mach-imx/mach-vf610.c
View File

@ -3,11 +3,63 @@
* Copyright 2012-2013 Freescale Semiconductor, Inc.
*/
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/io.h>
#include <linux/irqchip.h>
#include <asm/mach/arch.h>
#include <asm/hardware/cache-l2x0.h>
#include "common.h"
#include "hardware.h"
#define MSCM_CPxCOUNT 0x00c
#define MSCM_CPxCFG1 0x014
static void __init vf610_detect_cpu(void)
{
struct device_node *np;
u32 cpxcount, cpxcfg1;
unsigned int cpu_type;
void __iomem *mscm;
np = of_find_compatible_node(NULL, NULL, "fsl,vf610-mscm-cpucfg");
if (WARN_ON(!np))
return;
mscm = of_iomap(np, 0);
of_node_put(np);
if (WARN_ON(!mscm))
return;
cpxcount = readl_relaxed(mscm + MSCM_CPxCOUNT);
cpxcfg1 = readl_relaxed(mscm + MSCM_CPxCFG1);
iounmap(mscm);
cpu_type = cpxcount ? MXC_CPU_VF600 : MXC_CPU_VF500;
if (cpxcfg1)
cpu_type |= MXC_CPU_VFx10;
mxc_set_cpu_type(cpu_type);
}
static void __init vf610_init_machine(void)
{
struct device *parent;
vf610_detect_cpu();
parent = imx_soc_device_init();
if (parent == NULL)
pr_warn("failed to initialize soc device\n");
of_platform_default_populate(NULL, NULL, parent);
}
static const char * const vf610_dt_compat[] __initconst = {
"fsl,vf500",
"fsl,vf510",
@ -20,5 +72,6 @@ static const char * const vf610_dt_compat[] __initconst = {
DT_MACHINE_START(VYBRID_VF610, "Freescale Vybrid VF5xx/VF6xx (Device Tree)")
.l2c_aux_val = 0,
.l2c_aux_mask = ~0,
.init_machine = vf610_init_machine,
.dt_compat = vf610_dt_compat,
MACHINE_END

6
arch/arm/mach-imx/mxc.h
View File

@ -33,6 +33,12 @@
#define MXC_CPU_IMX7D 0x72
#define MXC_CPU_IMX7ULP 0xff
#define MXC_CPU_VFx10 0x010
#define MXC_CPU_VF500 0x500
#define MXC_CPU_VF510 (MXC_CPU_VF500 | MXC_CPU_VFx10)
#define MXC_CPU_VF600 0x600
#define MXC_CPU_VF610 (MXC_CPU_VF600 | MXC_CPU_VFx10)
#define IMX_DDR_TYPE_LPDDR2 1
#ifndef __ASSEMBLY__