linux-kernel - Re: [PATCH V7 6/6] of: unittest: Statically apply overlays using fdtoverlay

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Message-ID: <20210209040401.j5yya6qa442dvrur@vireshk-i7>
Date:   Tue, 9 Feb 2021 09:34:01 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Rob Herring <robh@...nel.org>
Cc:     Frank Rowand <frowand.list@...il.com>,
        Pantelis Antoniou <pantelis.antoniou@...sulko.com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Anmar Oueja <anmar.oueja@...aro.org>,
        Bill Mills <bill.mills@...aro.org>,
        David Gibson <david@...son.dropbear.id.au>,
        devicetree@...r.kernel.org, Michal Marek <michal.lkml@...kovi.net>
Subject: Re: [PATCH V7 6/6] of: unittest: Statically apply overlays using
 fdtoverlay

On 08-02-21, 08:21, Rob Herring wrote:
> In string 'm' replace '.dtb' with '-dtbs'. Then we get the value of
> that variable.

Ah, thanks. I was able to get everything to work as expected now :)

> >  ifneq ($(CHECK_DTBS),)
> >  extra-y += $(patsubst %.dtb,%.dt.yaml, $(dtb-y))
> > +extra-y += $(patsubst %.dtbo,%.dt.yaml, $(dtb-y))
> >  extra-$(CONFIG_OF_ALL_DTBS) += $(patsubst %.dtb,%.dt.yaml, $(dtb-))
> > +extra-$(CONFIG_OF_ALL_DTBS) += $(patsubst %.dtbo,%.dt.yaml, $(dtb-))
> >  endif
> 
> I'll have to try that out. I think that should work.

It works with your patch itself, just that it was done after the
failure and so wasn't happening.

> > 2. This fails dtbs_check as it tries to run it for the source file of
> >    test1.dtb
> >
> > $ make ARCH=arm64 O=../barm64/ -j8 CROSS_COMPILE=aarch64-linux-gnu- dtbs_check
> > make[1]: Entering directory '/mnt/ssd/all/work/repos/devel/barm64'
> > make[3]: *** No rule to make target 'arch/arm64/boot/dts/hisilicon/test1.dt.yaml', needed by '__build'.  Stop.
> > /mnt/ssd/all/work/repos/devel/linux/scripts/Makefile.build:496: recipe for target 'arch/arm64/boot/dts/hisilicon' failed
> > make[2]: *** [arch/arm64/boot/dts/hisilicon] Error 2
> > make[2]: *** Waiting for unfinished jobs....
> > /mnt/ssd/all/work/repos/devel/linux/Makefile:1345: recipe for target 'dtbs' failed
> > make[1]: *** [dtbs] Error 2
> > make[1]: Leaving directory '/mnt/ssd/all/work/repos/devel/barm64'
> > Makefile:185: recipe for target '__sub-make' failed
> > make: *** [__sub-make] Error 2
> >
> > I am not sure how to fix this.
> 
> Even if we fixed the make rules, it's not going to work with
> validation. There's some information from source files that we
> maintain in yaml output, but is lost in dtb output. For example, the
> sizes of /bits/ syntax are maintained. For now, I think we'll want to
> just validate base and overlays separately. We may need to turn off
> checks in overlays for required properties as they may be incomplete.
> We already do that on disabled nodes.

I did this instead and it made everything work, we don't try dt.yaml
for the test1.dtb file anymore, is this acceptable ?

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 886d2e6c58f0..b86ff1b3de14 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -66,7 +66,7 @@ multi-used   := $(multi-used-y) $(multi-used-m)
 real-obj-y := $(foreach m, $(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
 real-obj-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)) $($(m:.o=-))),$($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)),$(m)))
 
-real-dtb-y := $(foreach m,$(dtb-y), $(if $(strip $($(m:.dtb=-dtbs))),$($(m:.dtb=-dtbs)),))
+real-dtb-y := $(foreach m,$(overlay-y), $(if $(strip $($(m:.dtb=-dtbs))),$($(m:.dtb=-dtbs)),))
 dtb-y += $(real-dtb-y)
 
 always-y += $(always-m)

diff --git a/arch/arm64/boot/dts/hisilicon/Makefile b/arch/arm64/boot/dts/hisilicon/Makefile
index f4d68caeba83..69ca27014e89 100644
--- a/arch/arm64/boot/dts/hisilicon/Makefile
+++ b/arch/arm64/boot/dts/hisilicon/Makefile
@@ -6,3 +6,8 @@ dtb-$(CONFIG_ARCH_HISI) += hi6220-hikey.dtb
 dtb-$(CONFIG_ARCH_HISI) += hip05-d02.dtb
 dtb-$(CONFIG_ARCH_HISI) += hip06-d03.dtb
 dtb-$(CONFIG_ARCH_HISI) += hip07-d05.dtb
+
+DTC_FLAGS_hi3660-hikey960 += -@
+
+test1-dtbs := hi3660-hikey960.dtb hi3660-hikey960-overlay.dtbo
+overlay-y += test1.dtb
diff --git a/arch/arm64/boot/dts/hisilicon/hi3660-hikey960-overlay.dts b/arch/arm64/boot/dts/hisilicon/hi3660-hikey960-overlay.dts
new file mode 100644
index 000000000000..1235a911caae
--- /dev/null
+++ b/arch/arm64/boot/dts/hisilicon/hi3660-hikey960-overlay.dts
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+/plugin/;
+
+&dwmmc2 {
+       #address-cells = <0x1>;
+       #size-cells = <0x0>;
+
+       wlcore2: wlcore@5 {
+               compatible = "ti,wl1837";
+               reg = <2>;
+               interrupt-parent = <&gpio22>;
+               interrupts = <3 1>;
+               test = <1>;
+       };
+};

-- 
viresh