dceb213ca4
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>
78 lines
1.5 KiB
C
78 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright 2012-2013 Freescale Semiconductor, Inc.
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*/
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#include <linux/of_address.h>
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#include <linux/of_platform.h>
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#include <linux/io.h>
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#include <linux/irqchip.h>
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#include <asm/mach/arch.h>
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#include <asm/hardware/cache-l2x0.h>
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#include "common.h"
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#include "hardware.h"
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#define MSCM_CPxCOUNT 0x00c
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#define MSCM_CPxCFG1 0x014
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static void __init vf610_detect_cpu(void)
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{
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struct device_node *np;
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u32 cpxcount, cpxcfg1;
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unsigned int cpu_type;
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void __iomem *mscm;
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np = of_find_compatible_node(NULL, NULL, "fsl,vf610-mscm-cpucfg");
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if (WARN_ON(!np))
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return;
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mscm = of_iomap(np, 0);
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of_node_put(np);
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if (WARN_ON(!mscm))
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return;
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cpxcount = readl_relaxed(mscm + MSCM_CPxCOUNT);
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cpxcfg1 = readl_relaxed(mscm + MSCM_CPxCFG1);
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iounmap(mscm);
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cpu_type = cpxcount ? MXC_CPU_VF600 : MXC_CPU_VF500;
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if (cpxcfg1)
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cpu_type |= MXC_CPU_VFx10;
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mxc_set_cpu_type(cpu_type);
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}
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static void __init vf610_init_machine(void)
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{
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struct device *parent;
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vf610_detect_cpu();
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parent = imx_soc_device_init();
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if (parent == NULL)
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pr_warn("failed to initialize soc device\n");
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of_platform_default_populate(NULL, NULL, parent);
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}
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static const char * const vf610_dt_compat[] __initconst = {
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"fsl,vf500",
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"fsl,vf510",
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"fsl,vf600",
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"fsl,vf610",
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"fsl,vf610m4",
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NULL,
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};
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DT_MACHINE_START(VYBRID_VF610, "Freescale Vybrid VF5xx/VF6xx (Device Tree)")
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.l2c_aux_val = 0,
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.l2c_aux_mask = ~0,
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.init_machine = vf610_init_machine,
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.dt_compat = vf610_dt_compat,
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MACHINE_END
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