Re: [PATCH 2/2] ARM: dts: cfa10049: Change the SPI3 bus to spi-gpio
On Fri, Jan 25, 2013 at 09:39:35AM +0100, Maxime Ripard wrote: > The DAC found on the last chip select requires a word length of 12 bits, > which is not supported by the SSP controller of the iMX28. Use > bitbanging for that bus to support such a length. > > Signed-off-by: Maxime Ripard Applied, thanks. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 2/2] ARM: dts: cfa10049: Change the SPI3 bus to spi-gpio
On Fri, Jan 25, 2013 at 09:39:35AM +0100, Maxime Ripard wrote: The DAC found on the last chip select requires a word length of 12 bits, which is not supported by the SSP controller of the iMX28. Use bitbanging for that bus to support such a length. Signed-off-by: Maxime Ripard maxime.rip...@free-electrons.com Applied, thanks. -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[PATCH 2/2] ARM: dts: cfa10049: Change the SPI3 bus to spi-gpio
The DAC found on the last chip select requires a word length of 12 bits, which is not supported by the SSP controller of the iMX28. Use bitbanging for that bus to support such a length. Signed-off-by: Maxime Ripard --- arch/arm/boot/dts/imx28-cfa10049.dts | 78 ++ 1 file changed, 42 insertions(+), 36 deletions(-) diff --git a/arch/arm/boot/dts/imx28-cfa10049.dts b/arch/arm/boot/dts/imx28-cfa10049.dts index 7890acc..dd91244 100644 --- a/arch/arm/boot/dts/imx28-cfa10049.dts +++ b/arch/arm/boot/dts/imx28-cfa10049.dts @@ -52,48 +52,17 @@ spi3_pins_cfa10049: spi3-cfa10049@0 { reg = <0>; fsl,pinmux-ids = < - 0x0181 /* MX28_PAD_GPMI_RDN__SSP3_SCK */ - 0x01c1 /* MX28_PAD_GPMI_RESETN__SSP3_CMD */ - 0x0111 /* MX28_PAD_GPMI_CE1N__SSP3_D3 */ - 0x01a2 /* MX28_PAD_GPMI_ALE__SSP3_D4 */ - 0x01b2 /* MX28_PAD_GPMI_CLE__SSP3_D5 */ + 0x0183 /* MX28_PAD_GPMI_RDN__GPIO_0_24 */ + 0x01c3 /* MX28_PAD_GPMI_RESETN__GPIO_0_28 */ + 0x0113 /* MX28_PAD_GPMI_CE1N__GPIO_0_17 */ + 0x01a3 /* MX28_PAD_GPMI_ALE__GPIO_0_26 */ + 0x01b3 /* MX28_PAD_GPMI_CLE__GPIO_0_27 */ >; fsl,drive-strength = <1>; fsl,voltage = <1>; fsl,pull-up = <1>; }; }; - - ssp3: ssp@80016000 { - compatible = "fsl,imx28-spi"; - pinctrl-names = "default"; - pinctrl-0 = <_pins_cfa10049>; - status = "okay"; - - gpio5: gpio5@0 { - compatible = "fairchild,74hc595"; - gpio-controller; - #gpio-cells = <2>; - reg = <0>; - registers-number = <2>; - spi-max-frequency = <10>; - }; - - gpio6: gpio6@1 { - compatible = "fairchild,74hc595"; - gpio-controller; - #gpio-cells = <2>; - reg = <1>; - registers-number = <4>; - spi-max-frequency = <10>; - }; - - dac0: dh2228@2 { - compatible = "rohm,dh2228fv"; - reg = <2>; - spi-max-frequency = <10>; - }; - }; }; apbx@8004 { @@ -177,4 +146,41 @@ status = "okay"; }; }; + + spi3 { + compatible = "spi-gpio"; + pinctrl-names = "default"; + pinctrl-0 = <_pins_cfa10049>; + status = "okay"; + gpio-sck = < 24 0>; + gpio-mosi = < 28 0>; + cs-gpios = < 17 0 26 0 27 0>; + num-chipselects = <3>; + #address-cells = <1>; + #size-cells = <0>; + + gpio5: gpio5@0 { + compatible = "fairchild,74hc595"; + gpio-controller; + #gpio-cells = <2>; + reg = <0>; + registers-number = <2>; + spi-max-frequency = <10>; + }; + + gpio6: gpio6@1 { + compatible = "fairchild,74hc595"; + gpio-controller; + #gpio-cells = <2>; + reg = <1>; + registers-number = <4>; + spi-max-frequency = <10>; + }; + + dac0: dh2228@2 { + compatible = "rohm,dh2228fv"; + reg = <2>; + spi-max-frequency = <10>; + }; + }; }; -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the
[PATCH 2/2] ARM: dts: cfa10049: Change the SPI3 bus to spi-gpio
The DAC found on the last chip select requires a word length of 12 bits, which is not supported by the SSP controller of the iMX28. Use bitbanging for that bus to support such a length. Signed-off-by: Maxime Ripard maxime.rip...@free-electrons.com --- arch/arm/boot/dts/imx28-cfa10049.dts | 78 ++ 1 file changed, 42 insertions(+), 36 deletions(-) diff --git a/arch/arm/boot/dts/imx28-cfa10049.dts b/arch/arm/boot/dts/imx28-cfa10049.dts index 7890acc..dd91244 100644 --- a/arch/arm/boot/dts/imx28-cfa10049.dts +++ b/arch/arm/boot/dts/imx28-cfa10049.dts @@ -52,48 +52,17 @@ spi3_pins_cfa10049: spi3-cfa10049@0 { reg = 0; fsl,pinmux-ids = - 0x0181 /* MX28_PAD_GPMI_RDN__SSP3_SCK */ - 0x01c1 /* MX28_PAD_GPMI_RESETN__SSP3_CMD */ - 0x0111 /* MX28_PAD_GPMI_CE1N__SSP3_D3 */ - 0x01a2 /* MX28_PAD_GPMI_ALE__SSP3_D4 */ - 0x01b2 /* MX28_PAD_GPMI_CLE__SSP3_D5 */ + 0x0183 /* MX28_PAD_GPMI_RDN__GPIO_0_24 */ + 0x01c3 /* MX28_PAD_GPMI_RESETN__GPIO_0_28 */ + 0x0113 /* MX28_PAD_GPMI_CE1N__GPIO_0_17 */ + 0x01a3 /* MX28_PAD_GPMI_ALE__GPIO_0_26 */ + 0x01b3 /* MX28_PAD_GPMI_CLE__GPIO_0_27 */ ; fsl,drive-strength = 1; fsl,voltage = 1; fsl,pull-up = 1; }; }; - - ssp3: ssp@80016000 { - compatible = fsl,imx28-spi; - pinctrl-names = default; - pinctrl-0 = spi3_pins_cfa10049; - status = okay; - - gpio5: gpio5@0 { - compatible = fairchild,74hc595; - gpio-controller; - #gpio-cells = 2; - reg = 0; - registers-number = 2; - spi-max-frequency = 10; - }; - - gpio6: gpio6@1 { - compatible = fairchild,74hc595; - gpio-controller; - #gpio-cells = 2; - reg = 1; - registers-number = 4; - spi-max-frequency = 10; - }; - - dac0: dh2228@2 { - compatible = rohm,dh2228fv; - reg = 2; - spi-max-frequency = 10; - }; - }; }; apbx@8004 { @@ -177,4 +146,41 @@ status = okay; }; }; + + spi3 { + compatible = spi-gpio; + pinctrl-names = default; + pinctrl-0 = spi3_pins_cfa10049; + status = okay; + gpio-sck = gpio0 24 0; + gpio-mosi = gpio0 28 0; + cs-gpios = gpio0 17 0 gpio0 26 0 gpio0 27 0; + num-chipselects = 3; + #address-cells = 1; + #size-cells = 0; + + gpio5: gpio5@0 { + compatible = fairchild,74hc595; + gpio-controller; + #gpio-cells = 2; + reg = 0; + registers-number = 2; + spi-max-frequency = 10; + }; + + gpio6: gpio6@1 { + compatible = fairchild,74hc595; + gpio-controller; + #gpio-cells = 2; + reg = 1; + registers-number = 4; + spi-max-frequency = 10; + }; + + dac0: dh2228@2 { + compatible = rohm,dh2228fv; + reg = 2; + spi-max-frequency = 10; + }; + }; }; -- 1.7.10.4 -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to