lkml.org 
[lkml]   [2020]   [Mar]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH] ARM: vf610: report soc info via soc device
On a VF610 Vybrid:

Tested-by: Chris Healy <cphealy@gmail.com>

On Thu, Mar 26, 2020 at 10:42 AM Andrey Smirnov
<andrew.smirnov@gmail.com> wrote:
>
> 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
> ---
> arch/arm/mach-imx/cpu.c | 16 ++++++++++
> arch/arm/mach-imx/mach-vf610.c | 53 ++++++++++++++++++++++++++++++++++
> arch/arm/mach-imx/mxc.h | 6 ++++
> 3 files changed, 75 insertions(+)
>
> diff --git a/arch/arm/mach-imx/cpu.c b/arch/arm/mach-imx/cpu.c
> index 06f8d64b65af..e3d12b21d6f6 100644
> --- a/arch/arm/mach-imx/cpu.c
> +++ b/arch/arm/mach-imx/cpu.c
> @@ -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";
> }
> diff --git a/arch/arm/mach-imx/mach-vf610.c b/arch/arm/mach-imx/mach-vf610.c
> index 9c929b09310c..565dc08412a2 100644
> --- a/arch/arm/mach-imx/mach-vf610.c
> +++ b/arch/arm/mach-imx/mach-vf610.c
> @@ -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
> diff --git a/arch/arm/mach-imx/mxc.h b/arch/arm/mach-imx/mxc.h
> index 2bfd2d59b4a6..48e6d781f15b 100644
> --- a/arch/arm/mach-imx/mxc.h
> +++ b/arch/arm/mach-imx/mxc.h
> @@ -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__
> --
> 2.21.0

\
 
 \ /
  Last update: 2020-03-27 18:06    [W:0.038 / U:0.144 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site