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* [PATCH TF-A] fix(plat/rcar3): Fix RPC-IF device node name
@ 2022-03-29 12:17 Geert Uytterhoeven
  2022-06-15 14:33 ` Geert Uytterhoeven
  0 siblings, 1 reply; 8+ messages in thread
From: Geert Uytterhoeven @ 2022-03-29 12:17 UTC (permalink / raw)
  To: tf-a; +Cc: Marek Vasut, linux-renesas-soc, Geert Uytterhoeven

According to the Generic Names Recommendation in the Devicetree
Specification Release v0.3, and the DT Bindings for the Renesas Reduced
Pin Count Interface, the node name for a Renesas RPC-IF device should be
"spi".  The node name matters, as the node is enabled by passing a DT
fragment from TF-A to subsequent software.

Fix this by renaming the device nodes from "rpc" to "spi".

Fixes: 12c75c8886a0ee69 ("feat(plat/rcar3): emit RPC status to DT fragment if RPC unlocked")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
Background:

On Renesas R-Car Gen3 platforms, the SPI Multi I/O Bus Controllers
(RPC-IF) provide access to HyperFlash or QSPI storage.  On production
systems, they are typically locked by the TF-A firmware, unless TF-A is
built with RCAR_RPC_HYPERFLASH_LOCKED=0.  When unlocked, TF-A
communicates this to subsequent software by passing a DT fragment that
sets the "status" property of the RPC-IF device node to "okay".

Unfortunately there are several issues preventing this from working all
the way to Linux:
  1. TF-A (and U-Boot on the receiving side) uses a device node name
     that does not conform to the DT specification nor the DT bindings
     for RPC-IF,
  2. While U-Boot receives the RPC-IF enablement from TF-A, it does not
     propagate it to Linux yet,
  3. The DTS files that are part of Linux do not have RPC HyperFlash
     support yet.

This patch takes care of the first issue in TF-A.

The related patches for U-Boot are [1].
Patches to enable RPC-IF support in Linux are available at [2].

Thanks for your comments!

[1] "[PATCH u-boot 0/3] renesas: Fix RPC-IF enablement"
    https://lore.kernel.org/r/cover.1648544792.git.geert+renesas@glider.be
[2] "[PATCH 0/5] arm64: dts: renesas: rcar-gen3: Enable HyperFlash support"
    https://lore.kernel.org/r/cover.1648548339.git.geert+renesas@glider.be

---
 plat/renesas/rcar/bl2_plat_setup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plat/renesas/rcar/bl2_plat_setup.c b/plat/renesas/rcar/bl2_plat_setup.c
index bbfa16927d6c2384..f85db8d650c6b1a5 100644
--- a/plat/renesas/rcar/bl2_plat_setup.c
+++ b/plat/renesas/rcar/bl2_plat_setup.c
@@ -574,7 +574,7 @@ static void bl2_add_rpc_node(void)
 		goto err;
 	}
 
-	node = ret = fdt_add_subnode(fdt, node, "rpc@ee200000");
+	node = ret = fdt_add_subnode(fdt, node, "spi@ee200000");
 	if (ret < 0) {
 		goto err;
 	}
-- 
2.25.1


^ permalink raw reply related	[flat|nested] 8+ messages in thread

* Re: [PATCH TF-A] fix(plat/rcar3): Fix RPC-IF device node name
  2022-03-29 12:17 [PATCH TF-A] fix(plat/rcar3): Fix RPC-IF device node name Geert Uytterhoeven
@ 2022-06-15 14:33 ` Geert Uytterhoeven
  2022-08-24  8:04   ` Geert Uytterhoeven
  0 siblings, 1 reply; 8+ messages in thread
From: Geert Uytterhoeven @ 2022-06-15 14:33 UTC (permalink / raw)
  To: tf-a; +Cc: Marek Vasut, Linux-Renesas

On Tue, Mar 29, 2022 at 2:17 PM Geert Uytterhoeven
<geert+renesas@glider.be> wrote:
> According to the Generic Names Recommendation in the Devicetree
> Specification Release v0.3, and the DT Bindings for the Renesas Reduced
> Pin Count Interface, the node name for a Renesas RPC-IF device should be
> "spi".  The node name matters, as the node is enabled by passing a DT
> fragment from TF-A to subsequent software.
>
> Fix this by renaming the device nodes from "rpc" to "spi".
>
> Fixes: 12c75c8886a0ee69 ("feat(plat/rcar3): emit RPC status to DT fragment if RPC unlocked")
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
> Background:
>
> On Renesas R-Car Gen3 platforms, the SPI Multi I/O Bus Controllers
> (RPC-IF) provide access to HyperFlash or QSPI storage.  On production
> systems, they are typically locked by the TF-A firmware, unless TF-A is
> built with RCAR_RPC_HYPERFLASH_LOCKED=0.  When unlocked, TF-A
> communicates this to subsequent software by passing a DT fragment that
> sets the "status" property of the RPC-IF device node to "okay".
>
> Unfortunately there are several issues preventing this from working all
> the way to Linux:
>   1. TF-A (and U-Boot on the receiving side) uses a device node name
>      that does not conform to the DT specification nor the DT bindings
>      for RPC-IF,
>   2. While U-Boot receives the RPC-IF enablement from TF-A, it does not
>      propagate it to Linux yet,
>   3. The DTS files that are part of Linux do not have RPC HyperFlash
>      support yet.
>
> This patch takes care of the first issue in TF-A.
>
> The related patches for U-Boot are [1].
> Patches to enable RPC-IF support in Linux are available at [2].

The patches to enable RPC HyperFlash support in Linux are now in
v5.19-rc1.  What needs to be done to accept the TF-A counterpart?

Thanks!

>
> Thanks for your comments!
>
> [1] "[PATCH u-boot 0/3] renesas: Fix RPC-IF enablement"
>     https://lore.kernel.org/r/cover.1648544792.git.geert+renesas@glider.be
> [2] "[PATCH 0/5] arm64: dts: renesas: rcar-gen3: Enable HyperFlash support"
>     https://lore.kernel.org/r/cover.1648548339.git.geert+renesas@glider.be
>
> ---
>  plat/renesas/rcar/bl2_plat_setup.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/plat/renesas/rcar/bl2_plat_setup.c b/plat/renesas/rcar/bl2_plat_setup.c
> index bbfa16927d6c2384..f85db8d650c6b1a5 100644
> --- a/plat/renesas/rcar/bl2_plat_setup.c
> +++ b/plat/renesas/rcar/bl2_plat_setup.c
> @@ -574,7 +574,7 @@ static void bl2_add_rpc_node(void)
>                 goto err;
>         }
>
> -       node = ret = fdt_add_subnode(fdt, node, "rpc@ee200000");
> +       node = ret = fdt_add_subnode(fdt, node, "spi@ee200000");
>         if (ret < 0) {
>                 goto err;
>         }

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

^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [PATCH TF-A] fix(plat/rcar3): Fix RPC-IF device node name
  2022-06-15 14:33 ` Geert Uytterhoeven
@ 2022-08-24  8:04   ` Geert Uytterhoeven
  2022-08-24  9:54     ` Geert Uytterhoeven
  0 siblings, 1 reply; 8+ messages in thread
From: Geert Uytterhoeven @ 2022-08-24  8:04 UTC (permalink / raw)
  To: tf-a; +Cc: Marek Vasut, Linux-Renesas

On Wed, Jun 15, 2022 at 4:33 PM Geert Uytterhoeven <geert@linux-m68k.org> wrote:
> On Tue, Mar 29, 2022 at 2:17 PM Geert Uytterhoeven
> <geert+renesas@glider.be> wrote:
> > According to the Generic Names Recommendation in the Devicetree
> > Specification Release v0.3, and the DT Bindings for the Renesas Reduced
> > Pin Count Interface, the node name for a Renesas RPC-IF device should be
> > "spi".  The node name matters, as the node is enabled by passing a DT
> > fragment from TF-A to subsequent software.
> >
> > Fix this by renaming the device nodes from "rpc" to "spi".
> >
> > Fixes: 12c75c8886a0ee69 ("feat(plat/rcar3): emit RPC status to DT fragment if RPC unlocked")
> > Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> > ---
> > Background:
> >
> > On Renesas R-Car Gen3 platforms, the SPI Multi I/O Bus Controllers
> > (RPC-IF) provide access to HyperFlash or QSPI storage.  On production
> > systems, they are typically locked by the TF-A firmware, unless TF-A is
> > built with RCAR_RPC_HYPERFLASH_LOCKED=0.  When unlocked, TF-A
> > communicates this to subsequent software by passing a DT fragment that
> > sets the "status" property of the RPC-IF device node to "okay".
> >
> > Unfortunately there are several issues preventing this from working all
> > the way to Linux:
> >   1. TF-A (and U-Boot on the receiving side) uses a device node name
> >      that does not conform to the DT specification nor the DT bindings
> >      for RPC-IF,
> >   2. While U-Boot receives the RPC-IF enablement from TF-A, it does not
> >      propagate it to Linux yet,
> >   3. The DTS files that are part of Linux do not have RPC HyperFlash
> >      support yet.
> >
> > This patch takes care of the first issue in TF-A.
> >
> > The related patches for U-Boot are [1].
> > Patches to enable RPC-IF support in Linux are available at [2].
>
> The patches to enable RPC HyperFlash support in Linux are now in
> v5.19-rc1.  What needs to be done to accept the TF-A counterpart?

The Linux counterpart is now in v5.19.
Can you please apply this patch to TF-A?
Thanks!

> > [1] "[PATCH u-boot 0/3] renesas: Fix RPC-IF enablement"
> >     https://lore.kernel.org/r/cover.1648544792.git.geert+renesas@glider.be
> > [2] "[PATCH 0/5] arm64: dts: renesas: rcar-gen3: Enable HyperFlash support"
> >     https://lore.kernel.org/r/cover.1648548339.git.geert+renesas@glider.be
> >
> > ---
> >  plat/renesas/rcar/bl2_plat_setup.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/plat/renesas/rcar/bl2_plat_setup.c b/plat/renesas/rcar/bl2_plat_setup.c
> > index bbfa16927d6c2384..f85db8d650c6b1a5 100644
> > --- a/plat/renesas/rcar/bl2_plat_setup.c
> > +++ b/plat/renesas/rcar/bl2_plat_setup.c
> > @@ -574,7 +574,7 @@ static void bl2_add_rpc_node(void)
> >                 goto err;
> >         }
> >
> > -       node = ret = fdt_add_subnode(fdt, node, "rpc@ee200000");
> > +       node = ret = fdt_add_subnode(fdt, node, "spi@ee200000");
> >         if (ret < 0) {
> >                 goto err;
> >         }

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

^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [PATCH TF-A] fix(plat/rcar3): Fix RPC-IF device node name
  2022-08-24  8:04   ` Geert Uytterhoeven
@ 2022-08-24  9:54     ` Geert Uytterhoeven
  2022-09-01  7:56       ` [TF-A] " Sandrine Bailleux
  0 siblings, 1 reply; 8+ messages in thread
From: Geert Uytterhoeven @ 2022-08-24  9:54 UTC (permalink / raw)
  To: tf-a; +Cc: Marek Vasut, Linux-Renesas, Jorge Ramirez-Ortiz

CC the other Renesas rcar-gen3 platform port maintainer

On Wed, Aug 24, 2022 at 10:04 AM Geert Uytterhoeven
<geert@linux-m68k.org> wrote:
> On Wed, Jun 15, 2022 at 4:33 PM Geert Uytterhoeven <geert@linux-m68k.org> wrote:
> > On Tue, Mar 29, 2022 at 2:17 PM Geert Uytterhoeven
> > <geert+renesas@glider.be> wrote:
> > > According to the Generic Names Recommendation in the Devicetree
> > > Specification Release v0.3, and the DT Bindings for the Renesas Reduced
> > > Pin Count Interface, the node name for a Renesas RPC-IF device should be
> > > "spi".  The node name matters, as the node is enabled by passing a DT
> > > fragment from TF-A to subsequent software.
> > >
> > > Fix this by renaming the device nodes from "rpc" to "spi".
> > >
> > > Fixes: 12c75c8886a0ee69 ("feat(plat/rcar3): emit RPC status to DT fragment if RPC unlocked")
> > > Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> > > ---
> > > Background:
> > >
> > > On Renesas R-Car Gen3 platforms, the SPI Multi I/O Bus Controllers
> > > (RPC-IF) provide access to HyperFlash or QSPI storage.  On production
> > > systems, they are typically locked by the TF-A firmware, unless TF-A is
> > > built with RCAR_RPC_HYPERFLASH_LOCKED=0.  When unlocked, TF-A
> > > communicates this to subsequent software by passing a DT fragment that
> > > sets the "status" property of the RPC-IF device node to "okay".
> > >
> > > Unfortunately there are several issues preventing this from working all
> > > the way to Linux:
> > >   1. TF-A (and U-Boot on the receiving side) uses a device node name
> > >      that does not conform to the DT specification nor the DT bindings
> > >      for RPC-IF,
> > >   2. While U-Boot receives the RPC-IF enablement from TF-A, it does not
> > >      propagate it to Linux yet,
> > >   3. The DTS files that are part of Linux do not have RPC HyperFlash
> > >      support yet.
> > >
> > > This patch takes care of the first issue in TF-A.
> > >
> > > The related patches for U-Boot are [1].
> > > Patches to enable RPC-IF support in Linux are available at [2].
> >
> > The patches to enable RPC HyperFlash support in Linux are now in
> > v5.19-rc1.  What needs to be done to accept the TF-A counterpart?
>
> The Linux counterpart is now in v5.19.
> Can you please apply this patch to TF-A?
> Thanks!
>
> > > [1] "[PATCH u-boot 0/3] renesas: Fix RPC-IF enablement"
> > >     https://lore.kernel.org/r/cover.1648544792.git.geert+renesas@glider.be
> > > [2] "[PATCH 0/5] arm64: dts: renesas: rcar-gen3: Enable HyperFlash support"
> > >     https://lore.kernel.org/r/cover.1648548339.git.geert+renesas@glider.be
> > >
> > > ---
> > >  plat/renesas/rcar/bl2_plat_setup.c | 2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > >
> > > diff --git a/plat/renesas/rcar/bl2_plat_setup.c b/plat/renesas/rcar/bl2_plat_setup.c
> > > index bbfa16927d6c2384..f85db8d650c6b1a5 100644
> > > --- a/plat/renesas/rcar/bl2_plat_setup.c
> > > +++ b/plat/renesas/rcar/bl2_plat_setup.c
> > > @@ -574,7 +574,7 @@ static void bl2_add_rpc_node(void)
> > >                 goto err;
> > >         }
> > >
> > > -       node = ret = fdt_add_subnode(fdt, node, "rpc@ee200000");
> > > +       node = ret = fdt_add_subnode(fdt, node, "spi@ee200000");
> > >         if (ret < 0) {
> > >                 goto err;
> > >         }

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

^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [TF-A] Re: [PATCH TF-A] fix(plat/rcar3): Fix RPC-IF device node name
  2022-08-24  9:54     ` Geert Uytterhoeven
@ 2022-09-01  7:56       ` Sandrine Bailleux
  2022-09-20 10:04         ` Geert Uytterhoeven
  0 siblings, 1 reply; 8+ messages in thread
From: Sandrine Bailleux @ 2022-09-01  7:56 UTC (permalink / raw)
  To: Geert Uytterhoeven, tf-a; +Cc: Marek Vasut, Linux-Renesas, Jorge Ramirez-Ortiz

Hi Geert,

Thank you for the patch!

TF-A project uses Gerrit for code reviews. Please refer to the 
"Contributor's Guide" [1], in particular section "6.3. Submitting Changes".

Could you please post your patch to review.trustedfirmware.org, adding 
the Renesas platform maintainers as reviewers?

I will trigger a CI run on your patch (in this case, given the nature of 
the change, this is mainly just for commit message compliance) and I'll 
provide the "maintainer" review.

Best regards,
Sandrine

[1] 
https://trustedfirmware-a.readthedocs.io/en/latest/process/contributing.html

On 8/24/22 11:54, Geert Uytterhoeven via TF-A wrote:
> CC the other Renesas rcar-gen3 platform port maintainer
> 
> On Wed, Aug 24, 2022 at 10:04 AM Geert Uytterhoeven
> <geert@linux-m68k.org> wrote:
>> On Wed, Jun 15, 2022 at 4:33 PM Geert Uytterhoeven <geert@linux-m68k.org> wrote:
>>> On Tue, Mar 29, 2022 at 2:17 PM Geert Uytterhoeven
>>> <geert+renesas@glider.be> wrote:
>>>> According to the Generic Names Recommendation in the Devicetree
>>>> Specification Release v0.3, and the DT Bindings for the Renesas Reduced
>>>> Pin Count Interface, the node name for a Renesas RPC-IF device should be
>>>> "spi".  The node name matters, as the node is enabled by passing a DT
>>>> fragment from TF-A to subsequent software.
>>>>
>>>> Fix this by renaming the device nodes from "rpc" to "spi".
>>>>
>>>> Fixes: 12c75c8886a0ee69 ("feat(plat/rcar3): emit RPC status to DT fragment if RPC unlocked")
>>>> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
>>>> ---
>>>> Background:
>>>>
>>>> On Renesas R-Car Gen3 platforms, the SPI Multi I/O Bus Controllers
>>>> (RPC-IF) provide access to HyperFlash or QSPI storage.  On production
>>>> systems, they are typically locked by the TF-A firmware, unless TF-A is
>>>> built with RCAR_RPC_HYPERFLASH_LOCKED=0.  When unlocked, TF-A
>>>> communicates this to subsequent software by passing a DT fragment that
>>>> sets the "status" property of the RPC-IF device node to "okay".
>>>>
>>>> Unfortunately there are several issues preventing this from working all
>>>> the way to Linux:
>>>>    1. TF-A (and U-Boot on the receiving side) uses a device node name
>>>>       that does not conform to the DT specification nor the DT bindings
>>>>       for RPC-IF,
>>>>    2. While U-Boot receives the RPC-IF enablement from TF-A, it does not
>>>>       propagate it to Linux yet,
>>>>    3. The DTS files that are part of Linux do not have RPC HyperFlash
>>>>       support yet.
>>>>
>>>> This patch takes care of the first issue in TF-A.
>>>>
>>>> The related patches for U-Boot are [1].
>>>> Patches to enable RPC-IF support in Linux are available at [2].
>>>
>>> The patches to enable RPC HyperFlash support in Linux are now in
>>> v5.19-rc1.  What needs to be done to accept the TF-A counterpart?
>>
>> The Linux counterpart is now in v5.19.
>> Can you please apply this patch to TF-A?
>> Thanks!
>>
>>>> [1] "[PATCH u-boot 0/3] renesas: Fix RPC-IF enablement"
>>>>      https://lore.kernel.org/r/cover.1648544792.git.geert+renesas@glider.be
>>>> [2] "[PATCH 0/5] arm64: dts: renesas: rcar-gen3: Enable HyperFlash support"
>>>>      https://lore.kernel.org/r/cover.1648548339.git.geert+renesas@glider.be
>>>>
>>>> ---
>>>>   plat/renesas/rcar/bl2_plat_setup.c | 2 +-
>>>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>>>
>>>> diff --git a/plat/renesas/rcar/bl2_plat_setup.c b/plat/renesas/rcar/bl2_plat_setup.c
>>>> index bbfa16927d6c2384..f85db8d650c6b1a5 100644
>>>> --- a/plat/renesas/rcar/bl2_plat_setup.c
>>>> +++ b/plat/renesas/rcar/bl2_plat_setup.c
>>>> @@ -574,7 +574,7 @@ static void bl2_add_rpc_node(void)
>>>>                  goto err;
>>>>          }
>>>>
>>>> -       node = ret = fdt_add_subnode(fdt, node, "rpc@ee200000");
>>>> +       node = ret = fdt_add_subnode(fdt, node, "spi@ee200000");
>>>>          if (ret < 0) {
>>>>                  goto err;
>>>>          }
> 
> 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

^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [TF-A] Re: [PATCH TF-A] fix(plat/rcar3): Fix RPC-IF device node name
  2022-09-01  7:56       ` [TF-A] " Sandrine Bailleux
@ 2022-09-20 10:04         ` Geert Uytterhoeven
  2022-10-03  6:58           ` Geert Uytterhoeven
  0 siblings, 1 reply; 8+ messages in thread
From: Geert Uytterhoeven @ 2022-09-20 10:04 UTC (permalink / raw)
  To: Sandrine Bailleux; +Cc: tf-a, Marek Vasut, Linux-Renesas

Hi Sandrine,

[dropped Jorge Ramirez-Ortiz, aas his address bounces, while
 he is still listed as first Renesas maintainer]

On Thu, Sep 1, 2022 at 9:57 AM Sandrine Bailleux
<sandrine.bailleux@arm.com> wrote:
> TF-A project uses Gerrit for code reviews. Please refer to the
> "Contributor's Guide" [1], in particular section "6.3. Submitting Changes".
>
> Could you please post your patch to review.trustedfirmware.org, adding
> the Renesas platform maintainers as reviewers?

Thank you, I have done so.
If anything is still missing, please let me know.

Thanks!

> I will trigger a CI run on your patch (in this case, given the nature of
> the change, this is mainly just for commit message compliance) and I'll
> provide the "maintainer" review.
>
> [1]
> https://trustedfirmware-a.readthedocs.io/en/latest/process/contributing.html
>
> On 8/24/22 11:54, Geert Uytterhoeven via TF-A wrote:
> > CC the other Renesas rcar-gen3 platform port maintainer
> >
> > On Wed, Aug 24, 2022 at 10:04 AM Geert Uytterhoeven
> > <geert@linux-m68k.org> wrote:
> >> On Wed, Jun 15, 2022 at 4:33 PM Geert Uytterhoeven <geert@linux-m68k.org> wrote:
> >>> On Tue, Mar 29, 2022 at 2:17 PM Geert Uytterhoeven
> >>> <geert+renesas@glider.be> wrote:
> >>>> According to the Generic Names Recommendation in the Devicetree
> >>>> Specification Release v0.3, and the DT Bindings for the Renesas Reduced
> >>>> Pin Count Interface, the node name for a Renesas RPC-IF device should be
> >>>> "spi".  The node name matters, as the node is enabled by passing a DT
> >>>> fragment from TF-A to subsequent software.
> >>>>
> >>>> Fix this by renaming the device nodes from "rpc" to "spi".
> >>>>
> >>>> Fixes: 12c75c8886a0ee69 ("feat(plat/rcar3): emit RPC status to DT fragment if RPC unlocked")
> >>>> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> >>>> ---
> >>>> Background:
> >>>>
> >>>> On Renesas R-Car Gen3 platforms, the SPI Multi I/O Bus Controllers
> >>>> (RPC-IF) provide access to HyperFlash or QSPI storage.  On production
> >>>> systems, they are typically locked by the TF-A firmware, unless TF-A is
> >>>> built with RCAR_RPC_HYPERFLASH_LOCKED=0.  When unlocked, TF-A
> >>>> communicates this to subsequent software by passing a DT fragment that
> >>>> sets the "status" property of the RPC-IF device node to "okay".
> >>>>
> >>>> Unfortunately there are several issues preventing this from working all
> >>>> the way to Linux:
> >>>>    1. TF-A (and U-Boot on the receiving side) uses a device node name
> >>>>       that does not conform to the DT specification nor the DT bindings
> >>>>       for RPC-IF,
> >>>>    2. While U-Boot receives the RPC-IF enablement from TF-A, it does not
> >>>>       propagate it to Linux yet,
> >>>>    3. The DTS files that are part of Linux do not have RPC HyperFlash
> >>>>       support yet.
> >>>>
> >>>> This patch takes care of the first issue in TF-A.
> >>>>
> >>>> The related patches for U-Boot are [1].
> >>>> Patches to enable RPC-IF support in Linux are available at [2].
> >>>
> >>> The patches to enable RPC HyperFlash support in Linux are now in
> >>> v5.19-rc1.  What needs to be done to accept the TF-A counterpart?
> >>
> >> The Linux counterpart is now in v5.19.
> >> Can you please apply this patch to TF-A?
> >> Thanks!
> >>
> >>>> [1] "[PATCH u-boot 0/3] renesas: Fix RPC-IF enablement"
> >>>>      https://lore.kernel.org/r/cover.1648544792.git.geert+renesas@glider.be
> >>>> [2] "[PATCH 0/5] arm64: dts: renesas: rcar-gen3: Enable HyperFlash support"
> >>>>      https://lore.kernel.org/r/cover.1648548339.git.geert+renesas@glider.be
> >>>>
> >>>> ---
> >>>>   plat/renesas/rcar/bl2_plat_setup.c | 2 +-
> >>>>   1 file changed, 1 insertion(+), 1 deletion(-)
> >>>>
> >>>> diff --git a/plat/renesas/rcar/bl2_plat_setup.c b/plat/renesas/rcar/bl2_plat_setup.c
> >>>> index bbfa16927d6c2384..f85db8d650c6b1a5 100644
> >>>> --- a/plat/renesas/rcar/bl2_plat_setup.c
> >>>> +++ b/plat/renesas/rcar/bl2_plat_setup.c
> >>>> @@ -574,7 +574,7 @@ static void bl2_add_rpc_node(void)
> >>>>                  goto err;
> >>>>          }
> >>>>
> >>>> -       node = ret = fdt_add_subnode(fdt, node, "rpc@ee200000");
> >>>> +       node = ret = fdt_add_subnode(fdt, node, "spi@ee200000");
> >>>>          if (ret < 0) {
> >>>>                  goto err;
> >>>>          }

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

^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [TF-A] Re: [PATCH TF-A] fix(plat/rcar3): Fix RPC-IF device node name
  2022-09-20 10:04         ` Geert Uytterhoeven
@ 2022-10-03  6:58           ` Geert Uytterhoeven
  2022-10-03  9:23             ` Sandrine Bailleux
  0 siblings, 1 reply; 8+ messages in thread
From: Geert Uytterhoeven @ 2022-10-03  6:58 UTC (permalink / raw)
  To: Sandrine Bailleux; +Cc: tf-a, Marek Vasut, Linux-Renesas

Hi Sandrine,

On Tue, Sep 20, 2022 at 12:04 PM Geert Uytterhoeven
<geert@linux-m68k.org> wrote:
> On Thu, Sep 1, 2022 at 9:57 AM Sandrine Bailleux
> <sandrine.bailleux@arm.com> wrote:
> > TF-A project uses Gerrit for code reviews. Please refer to the
> > "Contributor's Guide" [1], in particular section "6.3. Submitting Changes".
> >
> > Could you please post your patch to review.trustedfirmware.org, adding
> > the Renesas platform maintainers as reviewers?
>
> Thank you, I have done so.
> If anything is still missing, please let me know.

https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/16792
seems to be stuck because the CI tries to build for the unsupported
"versal_net" plaform, hence fails.

What's the next step?
Thanks!

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

^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [TF-A] Re: [PATCH TF-A] fix(plat/rcar3): Fix RPC-IF device node name
  2022-10-03  6:58           ` Geert Uytterhoeven
@ 2022-10-03  9:23             ` Sandrine Bailleux
  0 siblings, 0 replies; 8+ messages in thread
From: Sandrine Bailleux @ 2022-10-03  9:23 UTC (permalink / raw)
  To: Geert Uytterhoeven; +Cc: tf-a, Marek Vasut, Linux-Renesas

Hi Geert,

Thanks for the nudge!

I've rebased your patch on top of the integration branch (which has the 
versal_net platform support patches), reran the CI and as I expected, it 
passed.

The patch has been merged now.

Regards,
Sandrine

On 10/3/22 08:58, Geert Uytterhoeven wrote:
> Hi Sandrine,
> 
> On Tue, Sep 20, 2022 at 12:04 PM Geert Uytterhoeven
> <geert@linux-m68k.org> wrote:
>> On Thu, Sep 1, 2022 at 9:57 AM Sandrine Bailleux
>> <sandrine.bailleux@arm.com> wrote:
>>> TF-A project uses Gerrit for code reviews. Please refer to the
>>> "Contributor's Guide" [1], in particular section "6.3. Submitting Changes".
>>>
>>> Could you please post your patch to review.trustedfirmware.org, adding
>>> the Renesas platform maintainers as reviewers?
>>
>> Thank you, I have done so.
>> If anything is still missing, please let me know.
> 
> https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/16792
> seems to be stuck because the CI tries to build for the unsupported
> "versal_net" plaform, hence fails.
> 
> What's the next step?
> Thanks!
> 
> 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

^ permalink raw reply	[flat|nested] 8+ messages in thread

end of thread, other threads:[~2022-10-03  9:24 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-03-29 12:17 [PATCH TF-A] fix(plat/rcar3): Fix RPC-IF device node name Geert Uytterhoeven
2022-06-15 14:33 ` Geert Uytterhoeven
2022-08-24  8:04   ` Geert Uytterhoeven
2022-08-24  9:54     ` Geert Uytterhoeven
2022-09-01  7:56       ` [TF-A] " Sandrine Bailleux
2022-09-20 10:04         ` Geert Uytterhoeven
2022-10-03  6:58           ` Geert Uytterhoeven
2022-10-03  9:23             ` Sandrine Bailleux

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