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ARM: vf610: report soc info via soc device

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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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53
arch/arm/mach-imx/mach-vf610.c
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@@ -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