Hi All, I need to update copyright information for this patch. This work is derived from linux and linux has extra copyright information. I have missed that. Will send V4 for fixing it.
Regards, Biju > -----Original Message----- > From: Biju Das <[email protected]> > Sent: 04 November 2020 10:56 > To: Simon Glass <[email protected]>; Marek Vasut > <[email protected]> > Cc: Biju Das <[email protected]>; Dave Gerlach <d- > [email protected]>; Prabhakar Mahadev Lad <prabhakar.mahadev- > [email protected]>; [email protected]; Nobuhiro Iwamatsu > <[email protected]>; Chris Paterson <[email protected]> > Subject: [PATCH v3 4/4] dm: soc: SoC identification driver for Renesas > SoC's > > Add SoC identification driver for Renesas SoC's. This allows to identify > the SoC type and revision based on Product Register. > > This can be checked where needed using soc_device_match(). > > Signed-off-by: Biju Das <[email protected]> > Reviewed-by: Lad Prabhakar <[email protected]> > --- > v2->v3: No Change. > v2: New patch > --- > drivers/soc/Kconfig | 7 ++ > drivers/soc/Makefile | 1 + > drivers/soc/soc_renesas.c | 239 ++++++++++++++++++++++++++++++++++++++ > 3 files changed, 247 insertions(+) > create mode 100644 drivers/soc/soc_renesas.c > > diff --git a/drivers/soc/Kconfig b/drivers/soc/Kconfig index > 864d00a885..475e94cd77 100644 > --- a/drivers/soc/Kconfig > +++ b/drivers/soc/Kconfig > @@ -16,6 +16,13 @@ config SOC_DEVICE_TI_K3 > This allows Texas Instruments Keystone 3 SoCs to identify > specifics about the SoC in use. > > +config SOC_DEVICE_RENESAS > + depends on SOC_DEVICE > + bool "Enable SoC driver for Renesas SoCs" > + help > + This allows Renesas SoCs to identify specifics about the > + SoC in use. > + > source "drivers/soc/ti/Kconfig" > > endmenu > diff --git a/drivers/soc/Makefile b/drivers/soc/Makefile index > 9ef20ca506..b143eac5fd 100644 > --- a/drivers/soc/Makefile > +++ b/drivers/soc/Makefile > @@ -4,5 +4,6 @@ > > obj-$(CONFIG_SOC_TI) += ti/ > obj-$(CONFIG_SOC_DEVICE) += soc-uclass.o > +obj-$(CONFIG_$(SPL_)SOC_DEVICE_RENESAS) += soc_renesas.o > obj-$(CONFIG_SOC_DEVICE_TI_K3) += soc_ti_k3.o > obj-$(CONFIG_SANDBOX) += soc_sandbox.o > diff --git a/drivers/soc/soc_renesas.c b/drivers/soc/soc_renesas.c new > file mode 100644 index 0000000000..4543e0dbfd > --- /dev/null > +++ b/drivers/soc/soc_renesas.c > @@ -0,0 +1,239 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Copyright (C) 2020 Renesas Electronics Corp. > + * > + */ > + > +#include <common.h> > +#include <dm.h> > +#include <dm/device-internal.h> > +#include <soc.h> > + > +#include <asm/io.h> > + > +struct soc_renesas_priv { > + const char *family; > + const char *soc_id; > + char revision[6]; > +}; > + > +struct renesas_family { > + const char name[16]; > + u32 reg; /* CCCR or PRR, if not in DT */ > +}; > + > +static const struct renesas_family fam_rcar_gen3 __maybe_unused = { > + .name = "R-Car Gen3", > + .reg = 0xfff00044, /* PRR (Product Register) */ > +}; > + > +static const struct renesas_family fam_rzg2 __maybe_unused = { > + .name = "RZ/G2", > + .reg = 0xfff00044, /* PRR (Product Register) */ > +}; > + > +struct renesas_soc { > + const struct renesas_family *family; > + u8 id; > +}; > + > +#ifdef CONFIG_R8A774A1 > +static const struct renesas_soc soc_rz_g2m = { > + .family = &fam_rzg2, > + .id = 0x52, > +}; > +#endif > + > +#ifdef CONFIG_R8A774B1 > +static const struct renesas_soc soc_rz_g2n = { > + .family = &fam_rzg2, > + .id = 0x55, > +}; > +#endif > + > +#ifdef CONFIG_R8A774C0 > +static const struct renesas_soc soc_rz_g2e = { > + .family = &fam_rzg2, > + .id = 0x57, > +}; > +#endif > + > +#ifdef CONFIG_R8A774E1 > +static const struct renesas_soc soc_rz_g2h = { > + .family = &fam_rzg2, > + .id = 0x4f, > +}; > +#endif > + > +#ifdef CONFIG_R8A7795 > +static const struct renesas_soc soc_rcar_h3 = { > + .family = &fam_rcar_gen3, > + .id = 0x4f, > +}; > +#endif > + > +#ifdef CONFIG_R8A7796 > +static const struct renesas_soc soc_rcar_m3_w = { > + .family = &fam_rcar_gen3, > + .id = 0x52, > +}; > +#endif > + > +#ifdef CONFIG_R8A77965 > +static const struct renesas_soc soc_rcar_m3_n = { > + .family = &fam_rcar_gen3, > + .id = 0x55, > +}; > +#endif > + > +#ifdef CONFIG_R8A77970 > +static const struct renesas_soc soc_rcar_v3m = { > + .family = &fam_rcar_gen3, > + .id = 0x54, > +}; > +#endif > + > +#ifdef CONFIG_R8A77980 > +static const struct renesas_soc soc_rcar_v3h = { > + .family = &fam_rcar_gen3, > + .id = 0x56, > +}; > +#endif > + > +#ifdef CONFIG_R8A77990 > +static const struct renesas_soc soc_rcar_e3 = { > + .family = &fam_rcar_gen3, > + .id = 0x57, > +}; > +#endif > + > +#ifdef CONFIG_R8A77995 > +static const struct renesas_soc soc_rcar_d3 = { > + .family = &fam_rcar_gen3, > + .id = 0x58, > +}; > +#endif > + > +static int soc_renesas_get_family(struct udevice *dev, char *buf, int > +size) { > + struct soc_renesas_priv *priv = dev_get_priv(dev); > + > + snprintf(buf, size, "%s", priv->family); > + > + return 0; > +} > + > +static int soc_renesas_get_revision(struct udevice *dev, char *buf, int > +size) { > + struct soc_renesas_priv *priv = dev_get_priv(dev); > + > + snprintf(buf, size, "%s", priv->revision); > + > + return 0; > +} > + > +static int soc_renesas_get_soc_id(struct udevice *dev, char *buf, int > +size) { > + struct soc_renesas_priv *priv = dev_get_priv(dev); > + > + snprintf(buf, size, "%s", priv->soc_id); > + > + return 0; > +} > + > +static const struct udevice_id renesas_socs[] = { #ifdef > +CONFIG_R8A774A1 > + { .compatible = "renesas,r8a774a1", .data = (ulong)&soc_rz_g2m, }, > +#endif > +#ifdef CONFIG_R8A774B1 > + { .compatible = "renesas,r8a774b1", .data = (ulong)&soc_rz_g2n, }, > +#endif > +#ifdef CONFIG_R8A774C0 > + { .compatible = "renesas,r8a774c0", .data = (ulong)&soc_rz_g2e, }, > +#endif > +#ifdef CONFIG_R8A774E1 > + { .compatible = "renesas,r8a774e1", .data = (ulong)&soc_rz_g2h, }, > +#endif > +#ifdef CONFIG_R8A7795 > + { .compatible = "renesas,r8a7795", .data = (ulong)&soc_rcar_h3, }, > +#endif > +#ifdef CONFIG_R8A7796 > + { .compatible = "renesas,r8a7796", .data = (ulong)&soc_rcar_m3_w, > }, > +#endif > +#ifdef CONFIG_R8A77965 > + { .compatible = "renesas,r8a77965", .data = (ulong)&soc_rcar_m3_n, > }, > +#endif > +#ifdef CONFIG_R8A77970 > + { .compatible = "renesas,r8a77970", .data = (ulong)&soc_rcar_v3m, }, > +#endif > +#ifdef CONFIG_R8A77980 > + { .compatible = "renesas,r8a77980", .data = (ulong)&soc_rcar_v3h, }, > +#endif > +#ifdef CONFIG_R8A77990 > + { .compatible = "renesas,r8a77990", .data = (ulong)&soc_rcar_e3, }, > +#endif > +#ifdef CONFIG_R8A77995 > + { .compatible = "renesas,r8a77995", .data = (ulong)&soc_rcar_d3, }, > +#endif > + { /* sentinel */ } > +}; > + > +static const struct udevice_id prr_ids[] = { > + { .compatible = "renesas,prr" }, > + { /* sentinel */ } > +}; > + > +static const struct soc_ops soc_renesas_ops = { > + .get_family = soc_renesas_get_family, > + .get_revision = soc_renesas_get_revision, > + .get_soc_id = soc_renesas_get_soc_id, > +}; > + > +int soc_renesas_probe(struct udevice *dev) { > + struct soc_renesas_priv *priv = dev_get_priv(dev); > + const struct renesas_family *family; > + const struct udevice_id *match; > + struct renesas_soc *soc; > + unsigned int product, eshi = 0, eslo; > + ofnode root_node; > + > + root_node = ofnode_path("/"); > + match = of_match_node(renesas_socs, root_node); > + if (!match) { > + printf("SoC entry is missing in DT\n"); > + return 0; > + } > + > + soc = (struct renesas_soc *)match->data; > + family = soc->family; > + > + product = readl(0xFFF00044); > + /* R-Car M3-W ES1.1 incorrectly identifies as ES2.0 */ > + if ((product & 0x7fff) == 0x5210) > + product ^= 0x11; > + /* R-Car M3-W ES1.3 incorrectly identifies as ES2.1 */ > + if ((product & 0x7fff) == 0x5211) > + product ^= 0x12; > + if (soc->id && ((product >> 8) & 0xff) != soc->id) { > + printf("SoC mismatch (product = 0x%x)\n", product); > + return 0; > + } > + eshi = ((product >> 4) & 0x0f) + 1; > + eslo = product & 0xf; > + > + priv->family = family->name; > + priv->soc_id = strchr(match->compatible, ',') + 1; > + snprintf(priv->revision, sizeof(priv->revision), "ES%u.%u", eshi, > +eslo); > + > + return 0; > +} > + > +U_BOOT_DRIVER(soc_renesas) = { > + .name = "soc_renesas", > + .id = UCLASS_SOC, > + .ops = &soc_renesas_ops, > + .of_match = prr_ids, > + .probe = soc_renesas_probe, > + .priv_auto_alloc_size = sizeof(struct soc_renesas_priv), }; > -- > 2.17.1
