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Message-ID: <20240709-specked-paging-b821f10a657b@thorsis.com>
Date: Tue, 9 Jul 2024 12:41:02 +0200
From: Alexander Dahl <ada@...rsis.com>
To: claudiu beznea <claudiu.beznea@...on.dev>
Cc: devicetree@...r.kernel.org, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Nicolas Ferre <nicolas.ferre@...rochip.com>,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
Mihai Sain <mihai.sain@...rochip.com>
Subject: Re: [PATCH] ARM: dts: microchip: sam9x60: Move i2c address/size to
dtsi
Hello Claudiu,
Am Mon, Jul 08, 2024 at 07:23:47PM +0300 schrieb claudiu beznea:
>
>
> On 05.07.2024 09:19, Alexander Dahl wrote:
> > Hei hei,
> >
> > Am Tue, May 28, 2024 at 05:31:09PM +0200 schrieb Alexander Dahl:
> >> These properties are common for all i2c subnodes, and marked as
> >> 'required' in atmel/microchip i2c bindings. Allows to add i2c device
> >> nodes (like an rtc for example) in other .dts files including
> >> sam9x60.dtsi without requiring to repeat these properties for each i2c
> >> device again and again.
> >>
> >> Found on a custom board after adding this in .dts:
> >>
> >> &flx5 {
> >> atmel,flexcom-mode = <ATMEL_FLEXCOM_MODE_TWI>;
> >> status = "okay";
> >>
> >> i2c5: i2c@600 {
> >> pinctrl-0 = <&pinctrl_flx5_default>;
> >> status = "okay";
> >>
> >> pcf8523: rtc@68 {
> >> compatible = "nxp,pcf8523";
> >> reg = <0x68>;
> >> };
> >> };
> >> };
> >>
> >> … which created a warning like this:
> >>
> >> […]:236.4-17: Warning (reg_format): /ahb/apb/flexcom@...04000/i2c@.../rtc@68:reg: property has invalid length (4 bytes) (#address-cells == 2, #size-cells == 1)
> >> […]: Warning (pci_device_reg): Failed prerequisite 'reg_format'
> >> […]: Warning (pci_device_bus_num): Failed prerequisite 'reg_format'
> >> […]: Warning (simple_bus_reg): Failed prerequisite 'reg_format'
> >> […]/linux-6.6.25/arch/arm/boot/dts/microchip/sam9x60.dtsi:283.19-299.7: Warning (i2c_bus_bridge): /ahb/apb/flexcom@...04000/i2c@600: incorrect #address-cells for I2C bus also defined at […]:228.16-238.4
> >> […]/linux-6.6.25/arch/arm/boot/dts/microchip/sam9x60.dtsi:283.19-299.7: Warning (i2c_bus_bridge): /ahb/apb/flexcom@...04000/i2c@600: incorrect #size-cells for I2C bus also defined at […]:228.16-238.4
> >> […]: Warning (i2c_bus_reg): Failed prerequisite 'reg_format'
> >> […]: Warning (i2c_bus_reg): Failed prerequisite 'i2c_bus_bridge'
> >> […]: Warning (spi_bus_reg): Failed prerequisite 'reg_format'
> >> […]:234.19-237.5: Warning (avoid_default_addr_size): /ahb/apb/flexcom@...04000/i2c@.../rtc@68: Relying on default #address-cells value
> >> […]:234.19-237.5: Warning (avoid_default_addr_size): /ahb/apb/flexcom@...04000/i2c@.../rtc@68: Relying on default #size-cells value
> >> […]: Warning (avoid_unnecessary_addr_size): Failed prerequisite 'avoid_default_addr_size'
> >> […]: Warning (unique_unit_address): Failed prerequisite 'avoid_default_addr_size'
> >>
> >> This probably should have been done with commit 84f23f3284d5 ("ARM: dts:
> >> at91: sam9x60: move flexcom definitions") already, where those
> >> address-cells and size-cells properties were left in the board .dts
> >> files instead of moving them to the dtsi.
> >
> > It's been a while. Is something wrong with the patch? Or with the
> > commit message?
>
> Please CC your patches to proper people (e.g., use
> ./script/get_maintainer.pl). I see no Microchip AT91 maintainers in the
> initial to/cc list of your patch.
You can be sure I did. This is the list I got on my patch and you see
I CCed everone listed as a _maintainer_ from that output:
% ./scripts/get_maintainer.pl outgoing/arm-dts-microchip/0001-ARM-dts-microchip-sam9x60-Move-i2c-address-size-to-d.patch
Rob Herring <robh@...nel.org> (maintainer:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS)
Krzysztof Kozlowski <krzk+dt@...nel.org> (maintainer:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS)
Conor Dooley <conor+dt@...nel.org> (maintainer:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS)
Nicolas Ferre <nicolas.ferre@...rochip.com> (supporter:ARM/Microchip (AT91) SoC support)
Alexandre Belloni <alexandre.belloni@...tlin.com> (supporter:ARM/Microchip (AT91) SoC support)
Claudiu Beznea <claudiu.beznea@...on.dev> (supporter:ARM/Microchip (AT91) SoC support,commit_signer:1/2=50%,authored:1/2=50%,added_lines:32/45=71%,removed_lines:32/45=71%)
Not sure why Nicolas, Alexandre, and you are listed as "supporter"
only? I think you should have been in the CC list in the first place,
sorry about that.
Besides, I just noticed arch/arm/boot/dts/microchip/sam9x60.dtsi is
not covered by specific matches in MAINTAINERS file, just through a
generic fallback for all dts. Lines in question are these, sam9 is
not matched:
F: arch/arm/boot/dts/microchip/at91*
F: arch/arm/boot/dts/microchip/sama*
Okay for the next time I will also CC supporters, but I found the
output of get_maintainer.pl some kind of confusing here.
Greets
Alex
>
> Thank you,
> Claudiu Beznea
>
> >
> > at91 support seems to have slowed down somehow lately? :-/
> >
> > Greets
> > Alex
> >
> >>
> >> Signed-off-by: Alexander Dahl <ada@...rsis.com>
> >> ---
> >> .../dts/microchip/at91-sam9x60_curiosity.dts | 2 --
> >> .../arm/boot/dts/microchip/at91-sam9x60ek.dts | 4 ---
> >> arch/arm/boot/dts/microchip/sam9x60.dtsi | 26 +++++++++++++++++++
> >> 3 files changed, 26 insertions(+), 6 deletions(-)
> >>
> >> diff --git a/arch/arm/boot/dts/microchip/at91-sam9x60_curiosity.dts b/arch/arm/boot/dts/microchip/at91-sam9x60_curiosity.dts
> >> index c6fbdd29019f..b9ffd9e5faac 100644
> >> --- a/arch/arm/boot/dts/microchip/at91-sam9x60_curiosity.dts
> >> +++ b/arch/arm/boot/dts/microchip/at91-sam9x60_curiosity.dts
> >> @@ -198,8 +198,6 @@ i2c0: i2c@600 {
> >> dmas = <0>, <0>;
> >> pinctrl-names = "default";
> >> pinctrl-0 = <&pinctrl_flx0_default>;
> >> - #address-cells = <1>;
> >> - #size-cells = <0>;
> >> i2c-analog-filter;
> >> i2c-digital-filter;
> >> i2c-digital-filter-width-ns = <35>;
> >> diff --git a/arch/arm/boot/dts/microchip/at91-sam9x60ek.dts b/arch/arm/boot/dts/microchip/at91-sam9x60ek.dts
> >> index f3cbb675cea4..3b38707d736e 100644
> >> --- a/arch/arm/boot/dts/microchip/at91-sam9x60ek.dts
> >> +++ b/arch/arm/boot/dts/microchip/at91-sam9x60ek.dts
> >> @@ -207,8 +207,6 @@ &flx0 {
> >> status = "okay";
> >>
> >> i2c0: i2c@600 {
> >> - #address-cells = <1>;
> >> - #size-cells = <0>;
> >> dmas = <0>, <0>;
> >> pinctrl-names = "default";
> >> pinctrl-0 = <&pinctrl_flx0_default>;
> >> @@ -254,8 +252,6 @@ &flx6 {
> >> status = "okay";
> >>
> >> i2c6: i2c@600 {
> >> - #address-cells = <1>;
> >> - #size-cells = <0>;
> >> dmas = <0>, <0>;
> >> pinctrl-names = "default";
> >> pinctrl-0 = <&pinctrl_flx6_default>;
> >> diff --git a/arch/arm/boot/dts/microchip/sam9x60.dtsi b/arch/arm/boot/dts/microchip/sam9x60.dtsi
> >> index 291540e5d81e..551b46894f47 100644
> >> --- a/arch/arm/boot/dts/microchip/sam9x60.dtsi
> >> +++ b/arch/arm/boot/dts/microchip/sam9x60.dtsi
> >> @@ -215,6 +215,8 @@ i2c4: i2c@600 {
> >> compatible = "microchip,sam9x60-i2c";
> >> reg = <0x600 0x200>;
> >> interrupts = <13 IRQ_TYPE_LEVEL_HIGH 7>;
> >> + #address-cells = <1>;
> >> + #size-cells = <0>;
> >> clocks = <&pmc PMC_TYPE_PERIPHERAL 13>;
> >> dmas = <&dma0
> >> (AT91_XDMAC_DT_MEM_IF(0) |
> >> @@ -284,6 +286,8 @@ i2c5: i2c@600 {
> >> compatible = "microchip,sam9x60-i2c";
> >> reg = <0x600 0x200>;
> >> interrupts = <14 IRQ_TYPE_LEVEL_HIGH 7>;
> >> + #address-cells = <1>;
> >> + #size-cells = <0>;
> >> clocks = <&pmc PMC_TYPE_PERIPHERAL 14>;
> >> dmas = <&dma0
> >> (AT91_XDMAC_DT_MEM_IF(0) |
> >> @@ -394,6 +398,8 @@ i2c11: i2c@600 {
> >> compatible = "microchip,sam9x60-i2c";
> >> reg = <0x600 0x200>;
> >> interrupts = <32 IRQ_TYPE_LEVEL_HIGH 7>;
> >> + #address-cells = <1>;
> >> + #size-cells = <0>;
> >> clocks = <&pmc PMC_TYPE_PERIPHERAL 32>;
> >> dmas = <&dma0
> >> (AT91_XDMAC_DT_MEM_IF(0) |
> >> @@ -443,6 +449,8 @@ i2c12: i2c@600 {
> >> compatible = "microchip,sam9x60-i2c";
> >> reg = <0x600 0x200>;
> >> interrupts = <33 IRQ_TYPE_LEVEL_HIGH 7>;
> >> + #address-cells = <1>;
> >> + #size-cells = <0>;
> >> clocks = <&pmc PMC_TYPE_PERIPHERAL 33>;
> >> dmas = <&dma0
> >> (AT91_XDMAC_DT_MEM_IF(0) |
> >> @@ -600,6 +608,8 @@ i2c6: i2c@600 {
> >> compatible = "microchip,sam9x60-i2c";
> >> reg = <0x600 0x200>;
> >> interrupts = <9 IRQ_TYPE_LEVEL_HIGH 7>;
> >> + #address-cells = <1>;
> >> + #size-cells = <0>;
> >> clocks = <&pmc PMC_TYPE_PERIPHERAL 9>;
> >> dmas = <&dma0
> >> (AT91_XDMAC_DT_MEM_IF(0) |
> >> @@ -649,6 +659,8 @@ i2c7: i2c@600 {
> >> compatible = "microchip,sam9x60-i2c";
> >> reg = <0x600 0x200>;
> >> interrupts = <10 IRQ_TYPE_LEVEL_HIGH 7>;
> >> + #address-cells = <1>;
> >> + #size-cells = <0>;
> >> clocks = <&pmc PMC_TYPE_PERIPHERAL 10>;
> >> dmas = <&dma0
> >> (AT91_XDMAC_DT_MEM_IF(0) |
> >> @@ -698,6 +710,8 @@ i2c8: i2c@600 {
> >> compatible = "microchip,sam9x60-i2c";
> >> reg = <0x600 0x200>;
> >> interrupts = <11 IRQ_TYPE_LEVEL_HIGH 7>;
> >> + #address-cells = <1>;
> >> + #size-cells = <0>;
> >> clocks = <&pmc PMC_TYPE_PERIPHERAL 11>;
> >> dmas = <&dma0
> >> (AT91_XDMAC_DT_MEM_IF(0) |
> >> @@ -766,6 +780,8 @@ i2c0: i2c@600 {
> >> compatible = "microchip,sam9x60-i2c";
> >> reg = <0x600 0x200>;
> >> interrupts = <5 IRQ_TYPE_LEVEL_HIGH 7>;
> >> + #address-cells = <1>;
> >> + #size-cells = <0>;
> >> clocks = <&pmc PMC_TYPE_PERIPHERAL 5>;
> >> dmas = <&dma0
> >> (AT91_XDMAC_DT_MEM_IF(0) |
> >> @@ -834,6 +850,8 @@ i2c1: i2c@600 {
> >> compatible = "microchip,sam9x60-i2c";
> >> reg = <0x600 0x200>;
> >> interrupts = <6 IRQ_TYPE_LEVEL_HIGH 7>;
> >> + #address-cells = <1>;
> >> + #size-cells = <0>;
> >> clocks = <&pmc PMC_TYPE_PERIPHERAL 6>;
> >> dmas = <&dma0
> >> (AT91_XDMAC_DT_MEM_IF(0) |
> >> @@ -902,6 +920,8 @@ i2c2: i2c@600 {
> >> compatible = "microchip,sam9x60-i2c";
> >> reg = <0x600 0x200>;
> >> interrupts = <7 IRQ_TYPE_LEVEL_HIGH 7>;
> >> + #address-cells = <1>;
> >> + #size-cells = <0>;
> >> clocks = <&pmc PMC_TYPE_PERIPHERAL 7>;
> >> dmas = <&dma0
> >> (AT91_XDMAC_DT_MEM_IF(0) |
> >> @@ -970,6 +990,8 @@ i2c3: i2c@600 {
> >> compatible = "microchip,sam9x60-i2c";
> >> reg = <0x600 0x200>;
> >> interrupts = <8 IRQ_TYPE_LEVEL_HIGH 7>;
> >> + #address-cells = <1>;
> >> + #size-cells = <0>;
> >> clocks = <&pmc PMC_TYPE_PERIPHERAL 8>;
> >> dmas = <&dma0
> >> (AT91_XDMAC_DT_MEM_IF(0) |
> >> @@ -1074,6 +1096,8 @@ i2c9: i2c@600 {
> >> compatible = "microchip,sam9x60-i2c";
> >> reg = <0x600 0x200>;
> >> interrupts = <15 IRQ_TYPE_LEVEL_HIGH 7>;
> >> + #address-cells = <1>;
> >> + #size-cells = <0>;
> >> clocks = <&pmc PMC_TYPE_PERIPHERAL 15>;
> >> dmas = <&dma0
> >> (AT91_XDMAC_DT_MEM_IF(0) |
> >> @@ -1123,6 +1147,8 @@ i2c10: i2c@600 {
> >> compatible = "microchip,sam9x60-i2c";
> >> reg = <0x600 0x200>;
> >> interrupts = <16 IRQ_TYPE_LEVEL_HIGH 7>;
> >> + #address-cells = <1>;
> >> + #size-cells = <0>;
> >> clocks = <&pmc PMC_TYPE_PERIPHERAL 16>;
> >> dmas = <&dma0
> >> (AT91_XDMAC_DT_MEM_IF(0) |
> >>
> >> base-commit: 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0
> >> --
> >> 2.39.2
> >>
> >>
> >
>
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