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OpenCloudOS-Kernel/drivers/soc/renesas/renesas-soc.c

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soc: renesas: Identify SoC and register with the SoC bus Identify the SoC type and revision, and register this information with the SoC bus, so it is available under /sys/devices/soc0/, and can be checked where needed using soc_device_match(). Identification is done using the Product Register or Common Chip Code Register, as declared in DT (PRR only for now), or using a hardcoded fallback if missing. Example: Detected Renesas R-Car Gen2 r8a7791 ES1.0 ... # cat /sys/devices/soc0/{machine,family,soc_id,revision} Koelsch R-Car Gen2 r8a7791 ES1.0 Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-11-15 02:37:08 +08:00
/*
* Renesas SoC Identification
*
* Copyright (C) 2014-2016 Glider bvba
*
* 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; version 2 of the License.
*
* 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.
*/
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/sys_soc.h>
struct renesas_family {
const char name[16];
u32 reg; /* CCCR or PRR, if not in DT */
};
static const struct renesas_family fam_rcar_gen1 __initconst __maybe_unused = {
.name = "R-Car Gen1",
.reg = 0xff000044, /* PRR (Product Register) */
};
static const struct renesas_family fam_rcar_gen2 __initconst __maybe_unused = {
.name = "R-Car Gen2",
.reg = 0xff000044, /* PRR (Product Register) */
};
static const struct renesas_family fam_rcar_gen3 __initconst __maybe_unused = {
.name = "R-Car Gen3",
.reg = 0xfff00044, /* PRR (Product Register) */
};
static const struct renesas_family fam_rmobile __initconst __maybe_unused = {
.name = "R-Mobile",
.reg = 0xe600101c, /* CCCR (Common Chip Code Register) */
};
static const struct renesas_family fam_rza __initconst __maybe_unused = {
.name = "RZ/A",
};
static const struct renesas_family fam_rzg __initconst __maybe_unused = {
.name = "RZ/G",
.reg = 0xff000044, /* PRR (Product Register) */
};
static const struct renesas_family fam_shmobile __initconst __maybe_unused = {
.name = "SH-Mobile",
.reg = 0xe600101c, /* CCCR (Common Chip Code Register) */
};
struct renesas_soc {
const struct renesas_family *family;
u8 id;
};
static const struct renesas_soc soc_rz_a1h __initconst __maybe_unused = {
.family = &fam_rza,
};
static const struct renesas_soc soc_rmobile_ape6 __initconst __maybe_unused = {
.family = &fam_rmobile,
.id = 0x3f,
};
static const struct renesas_soc soc_rmobile_a1 __initconst __maybe_unused = {
.family = &fam_rmobile,
.id = 0x40,
};
soc: renesas: Identify RZ/G1H Add support for identifying the RZ/G1H (r8a7742) SoC. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2017-03-10 21:48:29 +08:00
static const struct renesas_soc soc_rz_g1h __initconst __maybe_unused = {
.family = &fam_rzg,
.id = 0x45,
};
soc: renesas: Identify SoC and register with the SoC bus Identify the SoC type and revision, and register this information with the SoC bus, so it is available under /sys/devices/soc0/, and can be checked where needed using soc_device_match(). Identification is done using the Product Register or Common Chip Code Register, as declared in DT (PRR only for now), or using a hardcoded fallback if missing. Example: Detected Renesas R-Car Gen2 r8a7791 ES1.0 ... # cat /sys/devices/soc0/{machine,family,soc_id,revision} Koelsch R-Car Gen2 r8a7791 ES1.0 Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-11-15 02:37:08 +08:00
static const struct renesas_soc soc_rz_g1m __initconst __maybe_unused = {
.family = &fam_rzg,
.id = 0x47,
};
soc: renesas: Identify RZ/G1N Add support for identifying the RZ/G1N (r8a7744) SoC. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2017-03-10 21:48:30 +08:00
static const struct renesas_soc soc_rz_g1n __initconst __maybe_unused = {
.family = &fam_rzg,
.id = 0x4b,
};
soc: renesas: Identify SoC and register with the SoC bus Identify the SoC type and revision, and register this information with the SoC bus, so it is available under /sys/devices/soc0/, and can be checked where needed using soc_device_match(). Identification is done using the Product Register or Common Chip Code Register, as declared in DT (PRR only for now), or using a hardcoded fallback if missing. Example: Detected Renesas R-Car Gen2 r8a7791 ES1.0 ... # cat /sys/devices/soc0/{machine,family,soc_id,revision} Koelsch R-Car Gen2 r8a7791 ES1.0 Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-11-15 02:37:08 +08:00
static const struct renesas_soc soc_rz_g1e __initconst __maybe_unused = {
.family = &fam_rzg,
.id = 0x4c,
};
soc: renesas: Identify RZ/G1C Add support for identifying the RZ/G1C (r8a77470) SoC. Signed-off-by: Biju Das <biju.das@bp.renesas.com> Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2018-03-27 22:37:13 +08:00
static const struct renesas_soc soc_rz_g1c __initconst __maybe_unused = {
.family = &fam_rzg,
.id = 0x53,
};
soc: renesas: Identify SoC and register with the SoC bus Identify the SoC type and revision, and register this information with the SoC bus, so it is available under /sys/devices/soc0/, and can be checked where needed using soc_device_match(). Identification is done using the Product Register or Common Chip Code Register, as declared in DT (PRR only for now), or using a hardcoded fallback if missing. Example: Detected Renesas R-Car Gen2 r8a7791 ES1.0 ... # cat /sys/devices/soc0/{machine,family,soc_id,revision} Koelsch R-Car Gen2 r8a7791 ES1.0 Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-11-15 02:37:08 +08:00
static const struct renesas_soc soc_rcar_m1a __initconst __maybe_unused = {
.family = &fam_rcar_gen1,
};
static const struct renesas_soc soc_rcar_h1 __initconst __maybe_unused = {
.family = &fam_rcar_gen1,
.id = 0x3b,
};
static const struct renesas_soc soc_rcar_h2 __initconst __maybe_unused = {
.family = &fam_rcar_gen2,
.id = 0x45,
};
static const struct renesas_soc soc_rcar_m2_w __initconst __maybe_unused = {
.family = &fam_rcar_gen2,
.id = 0x47,
};
static const struct renesas_soc soc_rcar_v2h __initconst __maybe_unused = {
.family = &fam_rcar_gen2,
.id = 0x4a,
};
static const struct renesas_soc soc_rcar_m2_n __initconst __maybe_unused = {
.family = &fam_rcar_gen2,
.id = 0x4b,
};
static const struct renesas_soc soc_rcar_e2 __initconst __maybe_unused = {
.family = &fam_rcar_gen2,
.id = 0x4c,
};
static const struct renesas_soc soc_rcar_h3 __initconst __maybe_unused = {
.family = &fam_rcar_gen3,
.id = 0x4f,
};
static const struct renesas_soc soc_rcar_m3_w __initconst __maybe_unused = {
.family = &fam_rcar_gen3,
.id = 0x52,
};
soc: renesas: Identify R-Car M3-N Add support for indentifying R-Car M3-N (R8A77965) SoC. Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2018-02-20 23:12:05 +08:00
static const struct renesas_soc soc_rcar_m3_n __initconst __maybe_unused = {
.family = &fam_rcar_gen3,
.id = 0x55,
};
soc: renesas: identify R-Car V3M Add support for identifying the R-Car V3M (R8A77970) SoC. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2017-09-13 04:37:17 +08:00
static const struct renesas_soc soc_rcar_v3m __initconst __maybe_unused = {
.family = &fam_rcar_gen3,
.id = 0x54,
};
soc: renesas: identify R-Car V3H Add support for identifying the R-Car V3H (R8A77980) SoC. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2018-02-03 02:22:14 +08:00
static const struct renesas_soc soc_rcar_v3h __initconst __maybe_unused = {
.family = &fam_rcar_gen3,
.id = 0x56,
};
soc: renesas: Identify R-Car D3 Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2017-07-20 20:34:51 +08:00
static const struct renesas_soc soc_rcar_d3 __initconst __maybe_unused = {
.family = &fam_rcar_gen3,
.id = 0x58,
};
soc: renesas: Identify SoC and register with the SoC bus Identify the SoC type and revision, and register this information with the SoC bus, so it is available under /sys/devices/soc0/, and can be checked where needed using soc_device_match(). Identification is done using the Product Register or Common Chip Code Register, as declared in DT (PRR only for now), or using a hardcoded fallback if missing. Example: Detected Renesas R-Car Gen2 r8a7791 ES1.0 ... # cat /sys/devices/soc0/{machine,family,soc_id,revision} Koelsch R-Car Gen2 r8a7791 ES1.0 Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-11-15 02:37:08 +08:00
static const struct renesas_soc soc_shmobile_ag5 __initconst __maybe_unused = {
.family = &fam_shmobile,
.id = 0x37,
};
static const struct of_device_id renesas_socs[] __initconst = {
#ifdef CONFIG_ARCH_R7S72100
{ .compatible = "renesas,r7s72100", .data = &soc_rz_a1h },
#endif
#ifdef CONFIG_ARCH_R8A73A4
{ .compatible = "renesas,r8a73a4", .data = &soc_rmobile_ape6 },
#endif
#ifdef CONFIG_ARCH_R8A7740
{ .compatible = "renesas,r8a7740", .data = &soc_rmobile_a1 },
#endif
soc: renesas: Identify RZ/G1H Add support for identifying the RZ/G1H (r8a7742) SoC. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2017-03-10 21:48:29 +08:00
#ifdef CONFIG_ARCH_R8A7742
{ .compatible = "renesas,r8a7742", .data = &soc_rz_g1h },
#endif
soc: renesas: Identify SoC and register with the SoC bus Identify the SoC type and revision, and register this information with the SoC bus, so it is available under /sys/devices/soc0/, and can be checked where needed using soc_device_match(). Identification is done using the Product Register or Common Chip Code Register, as declared in DT (PRR only for now), or using a hardcoded fallback if missing. Example: Detected Renesas R-Car Gen2 r8a7791 ES1.0 ... # cat /sys/devices/soc0/{machine,family,soc_id,revision} Koelsch R-Car Gen2 r8a7791 ES1.0 Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-11-15 02:37:08 +08:00
#ifdef CONFIG_ARCH_R8A7743
{ .compatible = "renesas,r8a7743", .data = &soc_rz_g1m },
#endif
soc: renesas: Identify RZ/G1N Add support for identifying the RZ/G1N (r8a7744) SoC. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2017-03-10 21:48:30 +08:00
#ifdef CONFIG_ARCH_R8A7744
{ .compatible = "renesas,r8a7744", .data = &soc_rz_g1n },
#endif
soc: renesas: Identify SoC and register with the SoC bus Identify the SoC type and revision, and register this information with the SoC bus, so it is available under /sys/devices/soc0/, and can be checked where needed using soc_device_match(). Identification is done using the Product Register or Common Chip Code Register, as declared in DT (PRR only for now), or using a hardcoded fallback if missing. Example: Detected Renesas R-Car Gen2 r8a7791 ES1.0 ... # cat /sys/devices/soc0/{machine,family,soc_id,revision} Koelsch R-Car Gen2 r8a7791 ES1.0 Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-11-15 02:37:08 +08:00
#ifdef CONFIG_ARCH_R8A7745
{ .compatible = "renesas,r8a7745", .data = &soc_rz_g1e },
#endif
soc: renesas: Identify RZ/G1C Add support for identifying the RZ/G1C (r8a77470) SoC. Signed-off-by: Biju Das <biju.das@bp.renesas.com> Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2018-03-27 22:37:13 +08:00
#ifdef CONFIG_ARCH_R8A77470
{ .compatible = "renesas,r8a77470", .data = &soc_rz_g1c },
#endif
soc: renesas: Identify SoC and register with the SoC bus Identify the SoC type and revision, and register this information with the SoC bus, so it is available under /sys/devices/soc0/, and can be checked where needed using soc_device_match(). Identification is done using the Product Register or Common Chip Code Register, as declared in DT (PRR only for now), or using a hardcoded fallback if missing. Example: Detected Renesas R-Car Gen2 r8a7791 ES1.0 ... # cat /sys/devices/soc0/{machine,family,soc_id,revision} Koelsch R-Car Gen2 r8a7791 ES1.0 Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-11-15 02:37:08 +08:00
#ifdef CONFIG_ARCH_R8A7778
{ .compatible = "renesas,r8a7778", .data = &soc_rcar_m1a },
#endif
#ifdef CONFIG_ARCH_R8A7779
{ .compatible = "renesas,r8a7779", .data = &soc_rcar_h1 },
#endif
#ifdef CONFIG_ARCH_R8A7790
{ .compatible = "renesas,r8a7790", .data = &soc_rcar_h2 },
#endif
#ifdef CONFIG_ARCH_R8A7791
{ .compatible = "renesas,r8a7791", .data = &soc_rcar_m2_w },
#endif
#ifdef CONFIG_ARCH_R8A7792
{ .compatible = "renesas,r8a7792", .data = &soc_rcar_v2h },
#endif
#ifdef CONFIG_ARCH_R8A7793
{ .compatible = "renesas,r8a7793", .data = &soc_rcar_m2_n },
#endif
#ifdef CONFIG_ARCH_R8A7794
{ .compatible = "renesas,r8a7794", .data = &soc_rcar_e2 },
#endif
#ifdef CONFIG_ARCH_R8A7795
{ .compatible = "renesas,r8a7795", .data = &soc_rcar_h3 },
#endif
#ifdef CONFIG_ARCH_R8A7796
{ .compatible = "renesas,r8a7796", .data = &soc_rcar_m3_w },
#endif
soc: renesas: Identify R-Car M3-N Add support for indentifying R-Car M3-N (R8A77965) SoC. Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2018-02-20 23:12:05 +08:00
#ifdef CONFIG_ARCH_R8A77965
{ .compatible = "renesas,r8a77965", .data = &soc_rcar_m3_n },
#endif
soc: renesas: identify R-Car V3M Add support for identifying the R-Car V3M (R8A77970) SoC. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2017-09-13 04:37:17 +08:00
#ifdef CONFIG_ARCH_R8A77970
{ .compatible = "renesas,r8a77970", .data = &soc_rcar_v3m },
#endif
soc: renesas: identify R-Car V3H Add support for identifying the R-Car V3H (R8A77980) SoC. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2018-02-03 02:22:14 +08:00
#ifdef CONFIG_ARCH_R8A77980
{ .compatible = "renesas,r8a77980", .data = &soc_rcar_v3h },
#endif
soc: renesas: Identify R-Car D3 Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2017-07-20 20:34:51 +08:00
#ifdef CONFIG_ARCH_R8A77995
{ .compatible = "renesas,r8a77995", .data = &soc_rcar_d3 },
#endif
soc: renesas: Identify SoC and register with the SoC bus Identify the SoC type and revision, and register this information with the SoC bus, so it is available under /sys/devices/soc0/, and can be checked where needed using soc_device_match(). Identification is done using the Product Register or Common Chip Code Register, as declared in DT (PRR only for now), or using a hardcoded fallback if missing. Example: Detected Renesas R-Car Gen2 r8a7791 ES1.0 ... # cat /sys/devices/soc0/{machine,family,soc_id,revision} Koelsch R-Car Gen2 r8a7791 ES1.0 Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-11-15 02:37:08 +08:00
#ifdef CONFIG_ARCH_SH73A0
{ .compatible = "renesas,sh73a0", .data = &soc_shmobile_ag5 },
#endif
{ /* sentinel */ }
};
static int __init renesas_soc_init(void)
{
struct soc_device_attribute *soc_dev_attr;
const struct renesas_family *family;
const struct of_device_id *match;
const struct renesas_soc *soc;
void __iomem *chipid = NULL;
struct soc_device *soc_dev;
struct device_node *np;
unsigned int product;
match = of_match_node(renesas_socs, of_root);
if (!match)
return -ENODEV;
soc = match->data;
family = soc->family;
/* Try PRR first, then hardcoded fallback */
np = of_find_compatible_node(NULL, NULL, "renesas,prr");
if (np) {
chipid = of_iomap(np, 0);
of_node_put(np);
} else if (soc->id) {
chipid = ioremap(family->reg, 4);
}
if (chipid) {
product = readl(chipid);
iounmap(chipid);
soc: renesas: Identify R-Car M3-W ES1.1 The Product Register of R-Car M3-W ES1.1 incorrectly identifies the SoC revision as ES2.0. Add a workaround to fix this. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2017-10-31 01:29:58 +08:00
/* R-Car M3-W ES1.1 incorrectly identifies as ES2.0 */
if ((product & 0x7fff) == 0x5210)
product ^= 0x11;
soc: renesas: Identify SoC and register with the SoC bus Identify the SoC type and revision, and register this information with the SoC bus, so it is available under /sys/devices/soc0/, and can be checked where needed using soc_device_match(). Identification is done using the Product Register or Common Chip Code Register, as declared in DT (PRR only for now), or using a hardcoded fallback if missing. Example: Detected Renesas R-Car Gen2 r8a7791 ES1.0 ... # cat /sys/devices/soc0/{machine,family,soc_id,revision} Koelsch R-Car Gen2 r8a7791 ES1.0 Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-11-15 02:37:08 +08:00
if (soc->id && ((product >> 8) & 0xff) != soc->id) {
pr_warn("SoC mismatch (product = 0x%x)\n", product);
return -ENODEV;
}
}
soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
if (!soc_dev_attr)
return -ENOMEM;
np = of_find_node_by_path("/");
of_property_read_string(np, "model", &soc_dev_attr->machine);
of_node_put(np);
soc_dev_attr->family = kstrdup_const(family->name, GFP_KERNEL);
soc_dev_attr->soc_id = kstrdup_const(strchr(match->compatible, ',') + 1,
GFP_KERNEL);
if (chipid)
soc_dev_attr->revision = kasprintf(GFP_KERNEL, "ES%u.%u",
((product >> 4) & 0x0f) + 1,
product & 0xf);
pr_info("Detected Renesas %s %s %s\n", soc_dev_attr->family,
soc_dev_attr->soc_id, soc_dev_attr->revision ?: "");
soc_dev = soc_device_register(soc_dev_attr);
if (IS_ERR(soc_dev)) {
kfree(soc_dev_attr->revision);
kfree_const(soc_dev_attr->soc_id);
kfree_const(soc_dev_attr->family);
kfree(soc_dev_attr);
return PTR_ERR(soc_dev);
}
return 0;
}
soc: renesas: Register SoC device early The r8a7795 SYSC driver manages PM Domains, and thus is initialized from an early_initcall(). However, this means the driver cannot check the SoC revision, as the SoC device hasn't been registered yet. Change renesas_soc_init() from a core_initcall() to an early_initcall() to fix this (renesas-soc.o is listed before rcar-sysc.o in the Makefile). Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2017-03-31 17:01:54 +08:00
early_initcall(renesas_soc_init);