[03/15] soc: renesas: Add R-Car M3-N support

Message ID 1518515162-23663-4-git-send-email-jacopo+renesas@jmondi.org
State Changes Requested, archived
Headers show
Series
  • R-Car M3-N initial support
Related show

Commit Message

Jacopo Mondi Feb. 13, 2018, 9:45 a.m.
Add support for R-Car M3-N (r8a77965) power areas and reset.
M3-N power areas are identical to M3-W ones, so just copy and rename
them.

Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
---
 .../bindings/power/renesas,rcar-sysc.txt           |  1 +
 .../devicetree/bindings/reset/renesas,rst.txt      |  1 +
 drivers/soc/renesas/Kconfig                        |  9 ++++--
 drivers/soc/renesas/Makefile                       |  1 +
 drivers/soc/renesas/r8a77965-sysc.c                | 37 ++++++++++++++++++++++
 drivers/soc/renesas/rcar-rst.c                     |  1 +
 drivers/soc/renesas/rcar-sysc.c                    |  3 ++
 drivers/soc/renesas/rcar-sysc.h                    |  1 +
 drivers/soc/renesas/renesas-soc.c                  |  8 +++++
 include/dt-bindings/power/r8a77965-sysc.h          | 31 ++++++++++++++++++
 10 files changed, 91 insertions(+), 2 deletions(-)
 create mode 100644 drivers/soc/renesas/r8a77965-sysc.c
 create mode 100644 include/dt-bindings/power/r8a77965-sysc.h

--
2.7.4

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Comments

Geert Uytterhoeven Feb. 14, 2018, 12:48 p.m. | #1
Hi Jacopo,

Thanks for your patch!

On Tue, Feb 13, 2018 at 10:45 AM, Jacopo Mondi
<jacopo+renesas@jmondi.org> wrote:
> Add support for R-Car M3-N (r8a77965) power areas and reset.
> M3-N power areas are identical to M3-W ones, so just copy and rename
> them.

They are not identical:
  - M3-N does not have the CA53-related areas,
  - M3-W does not have A3VP,
  - M3-N does not have A2VC0 (M3-W also doesn't, according to latest
datasheet?).

The datasheet also mentions A3SH, without further info about the register
block. I think we need to bring this up with Renesas.

>  .../bindings/power/renesas,rcar-sysc.txt           |  1 +
>  .../devicetree/bindings/reset/renesas,rst.txt      |  1 +
>  drivers/soc/renesas/Kconfig                        |  9 ++++--
>  drivers/soc/renesas/Makefile                       |  1 +
>  drivers/soc/renesas/r8a77965-sysc.c                | 37 ++++++++++++++++++++++
>  drivers/soc/renesas/rcar-rst.c                     |  1 +
>  drivers/soc/renesas/rcar-sysc.c                    |  3 ++
>  drivers/soc/renesas/rcar-sysc.h                    |  1 +
>  drivers/soc/renesas/renesas-soc.c                  |  8 +++++
>  include/dt-bindings/power/r8a77965-sysc.h          | 31 ++++++++++++++++++
>  10 files changed, 91 insertions(+), 2 deletions(-)
>  create mode 100644 drivers/soc/renesas/r8a77965-sysc.c
>  create mode 100644 include/dt-bindings/power/r8a77965-sysc.h

The maintainer may ask you to split this patch by functionality...

> --- /dev/null
> +++ b/drivers/soc/renesas/r8a77965-sysc.c
> @@ -0,0 +1,37 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Renesas R-Car M3-N System Controller
> + * Copyright (C) 2018 Jacopo Mondi <jacopo+renesas@jmondi.org>
> + *
> + * Based on Renesas R-Car M3-W System Controller
> + * Copyright (C) 2016 Glider bvba
> + */
> +
> +#include <linux/bug.h>
> +#include <linux/kernel.h>
> +
> +#include <dt-bindings/power/r8a77965-sysc.h>
> +
> +#include "rcar-sysc.h"
> +
> +static const struct rcar_sysc_area r8a77965_areas[] __initconst = {
> +       { "always-on",      0, 0, R8A77965_PD_ALWAYS_ON, -1, PD_ALWAYS_ON },
> +       { "ca57-scu",   0x1c0, 0, R8A77965_PD_CA57_SCU, R8A77965_PD_ALWAYS_ON,
> +         PD_SCU },
> +       { "ca57-cpu0",   0x80, 0, R8A77965_PD_CA57_CPU0, R8A77965_PD_CA57_SCU,
> +         PD_CPU_NOCR },
> +       { "ca57-cpu1",   0x80, 1, R8A77965_PD_CA57_CPU1, R8A77965_PD_CA57_SCU,
> +         PD_CPU_NOCR },
> +       { "cr7",        0x240, 0, R8A77965_PD_CR7,      R8A77965_PD_ALWAYS_ON },
> +       { "a3vc",       0x380, 0, R8A77965_PD_A3VC,     R8A77965_PD_ALWAYS_ON },
> +       { "a2vc0",      0x3c0, 0, R8A77965_PD_A2VC0,    R8A77965_PD_A3VC },

M3-N (and M3-W) does not have A2VC0?

> +       { "a2vc1",      0x3c0, 1, R8A77965_PD_A2VC1,    R8A77965_PD_A3VC },
> +       { "3dg-a",      0x100, 0, R8A77965_PD_3DG_A,    R8A77965_PD_ALWAYS_ON },
> +       { "3dg-b",      0x100, 1, R8A77965_PD_3DG_B,    R8A77965_PD_3DG_A },
> +       { "a3ir",       0x180, 0, R8A77965_PD_A3IR,     R8A77965_PD_ALWAYS_ON },

A3VP is missing?

> +};
> +
> +const struct rcar_sysc_info r8a77965_sysc_info __initconst = {
> +       .areas = r8a77965_areas,
> +       .num_areas = ARRAY_SIZE(r8a77965_areas),
> +};

> --- /dev/null
> +++ b/include/dt-bindings/power/r8a77965-sysc.h
> @@ -0,0 +1,31 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright (C) 2018 Jacopo Mondi <jacopo+renesas@jmondi.org>
> + * Copyright (C) 2016 Glider bvba
> + */
> +
> +#ifndef __DT_BINDINGS_POWER_R8A77965_SYSC_H__
> +#define __DT_BINDINGS_POWER_R8A77965_SYSC_H__
> +
> +/*
> + * These power domain indices match the numbers of the interrupt bits
> + * representing the power areas in the various Interrupt Registers
> + * (e.g. SYSCISR, Interrupt Status Register)
> + */
> +
> +#define R8A77965_PD_CA57_CPU0           0
> +#define R8A77965_PD_CA57_CPU1           1
> +#define R8A77965_PD_A3VP                9
> +#define R8A77965_PD_CA57_SCU           12
> +#define R8A77965_PD_CR7                        13
> +#define R8A77965_PD_A3VC               14
> +#define R8A77965_PD_3DG_A              17
> +#define R8A77965_PD_3DG_B              18
> +#define R8A77965_PD_A3IR               24
> +#define R8A77965_PD_A2VC0              25

M3-N (and M3-W) does not have A2VC0?

> +#define R8A77965_PD_A2VC1              26
> +
> +/* Always-on power area */
> +#define R8A77965_PD_ALWAYS_ON          32
> +
> +#endif /* __DT_BINDINGS_POWER_R8A77965_SYSC_H__ */

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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Simon Horman Feb. 15, 2018, 3:34 p.m. | #2
On Wed, Feb 14, 2018 at 01:48:27PM +0100, Geert Uytterhoeven wrote:
> Hi Jacopo,
> 
> Thanks for your patch!
> 
> On Tue, Feb 13, 2018 at 10:45 AM, Jacopo Mondi
> <jacopo+renesas@jmondi.org> wrote:
> > Add support for R-Car M3-N (r8a77965) power areas and reset.
> > M3-N power areas are identical to M3-W ones, so just copy and rename
> > them.
> 
> They are not identical:
>   - M3-N does not have the CA53-related areas,
>   - M3-W does not have A3VP,
>   - M3-N does not have A2VC0 (M3-W also doesn't, according to latest
> datasheet?).
> 
> The datasheet also mentions A3SH, without further info about the register
> block. I think we need to bring this up with Renesas.
> 
> >  .../bindings/power/renesas,rcar-sysc.txt           |  1 +
> >  .../devicetree/bindings/reset/renesas,rst.txt      |  1 +
> >  drivers/soc/renesas/Kconfig                        |  9 ++++--
> >  drivers/soc/renesas/Makefile                       |  1 +
> >  drivers/soc/renesas/r8a77965-sysc.c                | 37 ++++++++++++++++++++++
> >  drivers/soc/renesas/rcar-rst.c                     |  1 +
> >  drivers/soc/renesas/rcar-sysc.c                    |  3 ++
> >  drivers/soc/renesas/rcar-sysc.h                    |  1 +
> >  drivers/soc/renesas/renesas-soc.c                  |  8 +++++
> >  include/dt-bindings/power/r8a77965-sysc.h          | 31 ++++++++++++++++++
> >  10 files changed, 91 insertions(+), 2 deletions(-)
> >  create mode 100644 drivers/soc/renesas/r8a77965-sysc.c
> >  create mode 100644 include/dt-bindings/power/r8a77965-sysc.h
> 
> The maintainer may ask you to split this patch by functionality...

Yes, I would like this split up.

I think "[PATCH 00/11] Add R8A77980/Condor board support" provides
a good example.
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jacopo mondi Feb. 20, 2018, 10:10 a.m. | #3
Hi Geert,

On Wed, Feb 14, 2018 at 01:48:27PM +0100, Geert Uytterhoeven wrote:
> Hi Jacopo,
>
> Thanks for your patch!
>
> On Tue, Feb 13, 2018 at 10:45 AM, Jacopo Mondi
> <jacopo+renesas@jmondi.org> wrote:
> > Add support for R-Car M3-N (r8a77965) power areas and reset.
> > M3-N power areas are identical to M3-W ones, so just copy and rename
> > them.
>
> They are not identical:
>   - M3-N does not have the CA53-related areas,
>   - M3-W does not have A3VP,
>   - M3-N does not have A2VC0 (M3-W also doesn't, according to latest
> datasheet?).
>
> The datasheet also mentions A3SH, without further info about the register
> block. I think we need to bring this up with Renesas.
>
> >  .../bindings/power/renesas,rcar-sysc.txt           |  1 +
> >  .../devicetree/bindings/reset/renesas,rst.txt      |  1 +
> >  drivers/soc/renesas/Kconfig                        |  9 ++++--
> >  drivers/soc/renesas/Makefile                       |  1 +
> >  drivers/soc/renesas/r8a77965-sysc.c                | 37 ++++++++++++++++++++++
> >  drivers/soc/renesas/rcar-rst.c                     |  1 +
> >  drivers/soc/renesas/rcar-sysc.c                    |  3 ++
> >  drivers/soc/renesas/rcar-sysc.h                    |  1 +
> >  drivers/soc/renesas/renesas-soc.c                  |  8 +++++
> >  include/dt-bindings/power/r8a77965-sysc.h          | 31 ++++++++++++++++++
> >  10 files changed, 91 insertions(+), 2 deletions(-)
> >  create mode 100644 drivers/soc/renesas/r8a77965-sysc.c
> >  create mode 100644 include/dt-bindings/power/r8a77965-sysc.h
>
> The maintainer may ask you to split this patch by functionality...
>
> > --- /dev/null
> > +++ b/drivers/soc/renesas/r8a77965-sysc.c
> > @@ -0,0 +1,37 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * Renesas R-Car M3-N System Controller
> > + * Copyright (C) 2018 Jacopo Mondi <jacopo+renesas@jmondi.org>
> > + *
> > + * Based on Renesas R-Car M3-W System Controller
> > + * Copyright (C) 2016 Glider bvba
> > + */
> > +
> > +#include <linux/bug.h>
> > +#include <linux/kernel.h>
> > +
> > +#include <dt-bindings/power/r8a77965-sysc.h>
> > +
> > +#include "rcar-sysc.h"
> > +
> > +static const struct rcar_sysc_area r8a77965_areas[] __initconst = {
> > +       { "always-on",      0, 0, R8A77965_PD_ALWAYS_ON, -1, PD_ALWAYS_ON },
> > +       { "ca57-scu",   0x1c0, 0, R8A77965_PD_CA57_SCU, R8A77965_PD_ALWAYS_ON,
> > +         PD_SCU },
> > +       { "ca57-cpu0",   0x80, 0, R8A77965_PD_CA57_CPU0, R8A77965_PD_CA57_SCU,
> > +         PD_CPU_NOCR },
> > +       { "ca57-cpu1",   0x80, 1, R8A77965_PD_CA57_CPU1, R8A77965_PD_CA57_SCU,
> > +         PD_CPU_NOCR },
> > +       { "cr7",        0x240, 0, R8A77965_PD_CR7,      R8A77965_PD_ALWAYS_ON },
> > +       { "a3vc",       0x380, 0, R8A77965_PD_A3VC,     R8A77965_PD_ALWAYS_ON },
> > +       { "a2vc0",      0x3c0, 0, R8A77965_PD_A2VC0,    R8A77965_PD_A3VC },
>
> M3-N (and M3-W) does not have A2VC0?

Why do I still see that power area listed in latest renesas-drivers for
M3-W? Are there patch pendings for that?

I'll remove it anyway for M3-N.

Thanks
   j

>
> > +       { "a2vc1",      0x3c0, 1, R8A77965_PD_A2VC1,    R8A77965_PD_A3VC },
> > +       { "3dg-a",      0x100, 0, R8A77965_PD_3DG_A,    R8A77965_PD_ALWAYS_ON },
> > +       { "3dg-b",      0x100, 1, R8A77965_PD_3DG_B,    R8A77965_PD_3DG_A },
> > +       { "a3ir",       0x180, 0, R8A77965_PD_A3IR,     R8A77965_PD_ALWAYS_ON },
>
> A3VP is missing?
>
> > +};
> > +
> > +const struct rcar_sysc_info r8a77965_sysc_info __initconst = {
> > +       .areas = r8a77965_areas,
> > +       .num_areas = ARRAY_SIZE(r8a77965_areas),
> > +};
>
> > --- /dev/null
> > +++ b/include/dt-bindings/power/r8a77965-sysc.h
> > @@ -0,0 +1,31 @@
> > +/* SPDX-License-Identifier: GPL-2.0 */
> > +/*
> > + * Copyright (C) 2018 Jacopo Mondi <jacopo+renesas@jmondi.org>
> > + * Copyright (C) 2016 Glider bvba
> > + */
> > +
> > +#ifndef __DT_BINDINGS_POWER_R8A77965_SYSC_H__
> > +#define __DT_BINDINGS_POWER_R8A77965_SYSC_H__
> > +
> > +/*
> > + * These power domain indices match the numbers of the interrupt bits
> > + * representing the power areas in the various Interrupt Registers
> > + * (e.g. SYSCISR, Interrupt Status Register)
> > + */
> > +
> > +#define R8A77965_PD_CA57_CPU0           0
> > +#define R8A77965_PD_CA57_CPU1           1
> > +#define R8A77965_PD_A3VP                9
> > +#define R8A77965_PD_CA57_SCU           12
> > +#define R8A77965_PD_CR7                        13
> > +#define R8A77965_PD_A3VC               14
> > +#define R8A77965_PD_3DG_A              17
> > +#define R8A77965_PD_3DG_B              18
> > +#define R8A77965_PD_A3IR               24
> > +#define R8A77965_PD_A2VC0              25
>
> M3-N (and M3-W) does not have A2VC0?
>
> > +#define R8A77965_PD_A2VC1              26
> > +
> > +/* Always-on power area */
> > +#define R8A77965_PD_ALWAYS_ON          32
> > +
> > +#endif /* __DT_BINDINGS_POWER_R8A77965_SYSC_H__ */
>
> Gr{oetje,eeting}s,
>
>                         Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                 -- Linus Torvalds
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Patch

diff --git a/Documentation/devicetree/bindings/power/renesas,rcar-sysc.txt b/Documentation/devicetree/bindings/power/renesas,rcar-sysc.txt
index 8690f10..b9c9e28 100644
--- a/Documentation/devicetree/bindings/power/renesas,rcar-sysc.txt
+++ b/Documentation/devicetree/bindings/power/renesas,rcar-sysc.txt
@@ -17,6 +17,7 @@  Required properties:
       - "renesas,r8a7794-sysc" (R-Car E2)
       - "renesas,r8a7795-sysc" (R-Car H3)
       - "renesas,r8a7796-sysc" (R-Car M3-W)
+      - "renesas,r8a77965-sysc" (R-Car M3-N)
       - "renesas,r8a77970-sysc" (R-Car V3M)
       - "renesas,r8a77995-sysc" (R-Car D3)
   - reg: Address start and address range for the device.
diff --git a/Documentation/devicetree/bindings/reset/renesas,rst.txt b/Documentation/devicetree/bindings/reset/renesas,rst.txt
index a8014f3..64051d0 100644
--- a/Documentation/devicetree/bindings/reset/renesas,rst.txt
+++ b/Documentation/devicetree/bindings/reset/renesas,rst.txt
@@ -26,6 +26,7 @@  Required properties:
 		  - "renesas,r8a7794-rst" (R-Car E2)
 		  - "renesas,r8a7795-rst" (R-Car H3)
 		  - "renesas,r8a7796-rst" (R-Car M3-W)
+		  - "renesas,r8a77965-rst" (R-Car M3-N)
 		  - "renesas,r8a77970-rst" (R-Car V3M)
 		  - "renesas,r8a77995-rst" (R-Car D3)
   - reg: Address start and address range for the device.
diff --git a/drivers/soc/renesas/Kconfig b/drivers/soc/renesas/Kconfig
index 09550b1..def33f7 100644
--- a/drivers/soc/renesas/Kconfig
+++ b/drivers/soc/renesas/Kconfig
@@ -3,8 +3,8 @@  config SOC_RENESAS
 	default y if ARCH_RENESAS
 	select SOC_BUS
 	select RST_RCAR if ARCH_RCAR_GEN1 || ARCH_RCAR_GEN2 || \
-			   ARCH_R8A7795 || ARCH_R8A7796 || ARCH_R8A77970 || \
-			   ARCH_R8A77995
+			   ARCH_R8A7795 || ARCH_R8A7796 || ARCH_R8A77965 || \
+			   ARCH_R8A77970 || ARCH_R8A77995
 	select SYSC_R8A7743 if ARCH_R8A7743
 	select SYSC_R8A7745 if ARCH_R8A7745
 	select SYSC_R8A7779 if ARCH_R8A7779
@@ -14,6 +14,7 @@  config SOC_RENESAS
 	select SYSC_R8A7794 if ARCH_R8A7794
 	select SYSC_R8A7795 if ARCH_R8A7795
 	select SYSC_R8A7796 if ARCH_R8A7796
+	select SYSC_R8A77965 if ARCH_R8A77965
 	select SYSC_R8A77970 if ARCH_R8A77970
 	select SYSC_R8A77995 if ARCH_R8A77995

@@ -56,6 +57,10 @@  config SYSC_R8A7796
 	bool "R-Car M3-W System Controller support" if COMPILE_TEST
 	select SYSC_RCAR

+config SYSC_R8A77965
+	bool "R-Car M3-N System Controller support" if COMPILE_TEST
+	select SYSC_RCAR
+
 config SYSC_R8A77970
 	bool "R-Car V3M System Controller support" if COMPILE_TEST
 	select SYSC_RCAR
diff --git a/drivers/soc/renesas/Makefile b/drivers/soc/renesas/Makefile
index 845d62a..9f360b8 100644
--- a/drivers/soc/renesas/Makefile
+++ b/drivers/soc/renesas/Makefile
@@ -12,6 +12,7 @@  obj-$(CONFIG_SYSC_R8A7792)	+= r8a7792-sysc.o
 obj-$(CONFIG_SYSC_R8A7794)	+= r8a7794-sysc.o
 obj-$(CONFIG_SYSC_R8A7795)	+= r8a7795-sysc.o
 obj-$(CONFIG_SYSC_R8A7796)	+= r8a7796-sysc.o
+obj-$(CONFIG_SYSC_R8A77965)	+= r8a77965-sysc.o
 obj-$(CONFIG_SYSC_R8A77970)	+= r8a77970-sysc.o
 obj-$(CONFIG_SYSC_R8A77995)	+= r8a77995-sysc.o

diff --git a/drivers/soc/renesas/r8a77965-sysc.c b/drivers/soc/renesas/r8a77965-sysc.c
new file mode 100644
index 0000000..f3e17f3
--- /dev/null
+++ b/drivers/soc/renesas/r8a77965-sysc.c
@@ -0,0 +1,37 @@ 
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Renesas R-Car M3-N System Controller
+ * Copyright (C) 2018 Jacopo Mondi <jacopo+renesas@jmondi.org>
+ *
+ * Based on Renesas R-Car M3-W System Controller
+ * Copyright (C) 2016 Glider bvba
+ */
+
+#include <linux/bug.h>
+#include <linux/kernel.h>
+
+#include <dt-bindings/power/r8a77965-sysc.h>
+
+#include "rcar-sysc.h"
+
+static const struct rcar_sysc_area r8a77965_areas[] __initconst = {
+	{ "always-on",	    0, 0, R8A77965_PD_ALWAYS_ON, -1, PD_ALWAYS_ON },
+	{ "ca57-scu",	0x1c0, 0, R8A77965_PD_CA57_SCU,	R8A77965_PD_ALWAYS_ON,
+	  PD_SCU },
+	{ "ca57-cpu0",	 0x80, 0, R8A77965_PD_CA57_CPU0, R8A77965_PD_CA57_SCU,
+	  PD_CPU_NOCR },
+	{ "ca57-cpu1",	 0x80, 1, R8A77965_PD_CA57_CPU1, R8A77965_PD_CA57_SCU,
+	  PD_CPU_NOCR },
+	{ "cr7",	0x240, 0, R8A77965_PD_CR7,	R8A77965_PD_ALWAYS_ON },
+	{ "a3vc",	0x380, 0, R8A77965_PD_A3VC,	R8A77965_PD_ALWAYS_ON },
+	{ "a2vc0",	0x3c0, 0, R8A77965_PD_A2VC0,	R8A77965_PD_A3VC },
+	{ "a2vc1",	0x3c0, 1, R8A77965_PD_A2VC1,	R8A77965_PD_A3VC },
+	{ "3dg-a",	0x100, 0, R8A77965_PD_3DG_A,	R8A77965_PD_ALWAYS_ON },
+	{ "3dg-b",	0x100, 1, R8A77965_PD_3DG_B,	R8A77965_PD_3DG_A },
+	{ "a3ir",	0x180, 0, R8A77965_PD_A3IR,	R8A77965_PD_ALWAYS_ON },
+};
+
+const struct rcar_sysc_info r8a77965_sysc_info __initconst = {
+	.areas = r8a77965_areas,
+	.num_areas = ARRAY_SIZE(r8a77965_areas),
+};
diff --git a/drivers/soc/renesas/rcar-rst.c b/drivers/soc/renesas/rcar-rst.c
index 3316b02..9a84009 100644
--- a/drivers/soc/renesas/rcar-rst.c
+++ b/drivers/soc/renesas/rcar-rst.c
@@ -41,6 +41,7 @@  static const struct of_device_id rcar_rst_matches[] __initconst = {
 	/* R-Car Gen3 is handled like R-Car Gen2 */
 	{ .compatible = "renesas,r8a7795-rst", .data = &rcar_rst_gen2 },
 	{ .compatible = "renesas,r8a7796-rst", .data = &rcar_rst_gen2 },
+	{ .compatible = "renesas,r8a77965-rst", .data = &rcar_rst_gen2 },
 	{ .compatible = "renesas,r8a77970-rst", .data = &rcar_rst_gen2 },
 	{ .compatible = "renesas,r8a77995-rst", .data = &rcar_rst_gen2 },
 	{ /* sentinel */ }
diff --git a/drivers/soc/renesas/rcar-sysc.c b/drivers/soc/renesas/rcar-sysc.c
index 636872b..d87f83a 100644
--- a/drivers/soc/renesas/rcar-sysc.c
+++ b/drivers/soc/renesas/rcar-sysc.c
@@ -284,6 +284,9 @@  static const struct of_device_id rcar_sysc_matches[] __initconst = {
 #ifdef CONFIG_SYSC_R8A7796
 	{ .compatible = "renesas,r8a7796-sysc", .data = &r8a7796_sysc_info },
 #endif
+#ifdef CONFIG_SYSC_R8A77965
+	{ .compatible = "renesas,r8a77965-sysc", .data = &r8a77965_sysc_info },
+#endif
 #ifdef CONFIG_SYSC_R8A77970
 	{ .compatible = "renesas,r8a77970-sysc", .data = &r8a77970_sysc_info },
 #endif
diff --git a/drivers/soc/renesas/rcar-sysc.h b/drivers/soc/renesas/rcar-sysc.h
index 9d9daf9..c892105 100644
--- a/drivers/soc/renesas/rcar-sysc.h
+++ b/drivers/soc/renesas/rcar-sysc.h
@@ -58,6 +58,7 @@  extern const struct rcar_sysc_info r8a7792_sysc_info;
 extern const struct rcar_sysc_info r8a7794_sysc_info;
 extern const struct rcar_sysc_info r8a7795_sysc_info;
 extern const struct rcar_sysc_info r8a7796_sysc_info;
+extern const struct rcar_sysc_info r8a77965_sysc_info;
 extern const struct rcar_sysc_info r8a77970_sysc_info;
 extern const struct rcar_sysc_info r8a77995_sysc_info;

diff --git a/drivers/soc/renesas/renesas-soc.c b/drivers/soc/renesas/renesas-soc.c
index 926b7fd..b9e4660 100644
--- a/drivers/soc/renesas/renesas-soc.c
+++ b/drivers/soc/renesas/renesas-soc.c
@@ -144,6 +144,11 @@  static const struct renesas_soc soc_rcar_m3_w __initconst __maybe_unused = {
 	.id	= 0x52,
 };

+static const struct renesas_soc soc_rcar_m3_n __initconst __maybe_unused = {
+	.family	= &fam_rcar_gen3,
+	.id	= 0x55,
+};
+
 static const struct renesas_soc soc_rcar_v3m __initconst __maybe_unused = {
 	.family	= &fam_rcar_gen3,
 	.id	= 0x54,
@@ -209,6 +214,9 @@  static const struct of_device_id renesas_socs[] __initconst = {
 #ifdef CONFIG_ARCH_R8A7796
 	{ .compatible = "renesas,r8a7796",	.data = &soc_rcar_m3_w },
 #endif
+#ifdef CONFIG_ARCH_R8A77965
+	{ .compatible = "renesas,r8a77965",	.data = &soc_rcar_m3_n },
+#endif
 #ifdef CONFIG_ARCH_R8A77970
 	{ .compatible = "renesas,r8a77970",	.data = &soc_rcar_v3m },
 #endif
diff --git a/include/dt-bindings/power/r8a77965-sysc.h b/include/dt-bindings/power/r8a77965-sysc.h
new file mode 100644
index 0000000..1c41f62
--- /dev/null
+++ b/include/dt-bindings/power/r8a77965-sysc.h
@@ -0,0 +1,31 @@ 
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2018 Jacopo Mondi <jacopo+renesas@jmondi.org>
+ * Copyright (C) 2016 Glider bvba
+ */
+
+#ifndef __DT_BINDINGS_POWER_R8A77965_SYSC_H__
+#define __DT_BINDINGS_POWER_R8A77965_SYSC_H__
+
+/*
+ * These power domain indices match the numbers of the interrupt bits
+ * representing the power areas in the various Interrupt Registers
+ * (e.g. SYSCISR, Interrupt Status Register)
+ */
+
+#define R8A77965_PD_CA57_CPU0		 0
+#define R8A77965_PD_CA57_CPU1		 1
+#define R8A77965_PD_A3VP		 9
+#define R8A77965_PD_CA57_SCU		12
+#define R8A77965_PD_CR7			13
+#define R8A77965_PD_A3VC		14
+#define R8A77965_PD_3DG_A		17
+#define R8A77965_PD_3DG_B		18
+#define R8A77965_PD_A3IR		24
+#define R8A77965_PD_A2VC0		25
+#define R8A77965_PD_A2VC1		26
+
+/* Always-on power area */
+#define R8A77965_PD_ALWAYS_ON		32
+
+#endif /* __DT_BINDINGS_POWER_R8A77965_SYSC_H__ */