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Message-ID: <ced35e84-0dde-4c44-8b57-849036705de8@tuxon.dev>
Date: Mon, 8 Jul 2024 19:20:24 +0300
From: claudiu beznea <claudiu.beznea@...on.dev>
To: Alexander Dahl <ada@...rsis.com>, devicetree@...r.kernel.org
Cc: Rob Herring <robh@...nel.org>, Conor Dooley <conor+dt@...nel.org>,
linux-kernel@...r.kernel.org, Krzysztof Kozlowski <krzk+dt@...nel.org>,
linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] ARM: dts: microchip: sam9x60: Move i2c address/size to
dtsi
On 28.05.2024 18:31, Alexander Dahl wrote:
> These properties are common for all i2c subnodes, and marked as
> 'required' in atmel/microchip i2c bindings.
Not required anymore:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=cf7feb642dc0e36bbbda9ec9fecc6601f439b8dd
> 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.
>
> Signed-off-by: Alexander Dahl <ada@...rsis.com>
Will apply it for the next PR.
> ---
> .../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
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