[PATCH v5 3/3] ARM: dts: add dts files for xyref5260 board

[Rahul Sharma]

Thanks Pankaj,

On 13 March 2014 06:19, Pankaj Dubey <pankaj.dubey at samsung.com> wrote:
> Hi Rahul,
>
>
> On 03/13/2014 12:16 AM, Rahul Sharma wrote:
>>
>> The patch adds the dts files for xyref5260 board which
>> is based on Exynos5260 Evt0 sample.
>>
>> Signed-off-by: Rahul Sharma <rahul.sharma at samsung.com>
>> ---
>>   arch/arm/boot/dts/Makefile                      |    1 +
>>   arch/arm/boot/dts/exynos5260-xyref5260-evt0.dts |  110
>> +++++++++++++++++++++++
>>   2 files changed, 111 insertions(+)
>>   create mode 100644 arch/arm/boot/dts/exynos5260-xyref5260-evt0.dts
>>
>> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
>> index b9d6a8b..5a391bf 100644
>> --- a/arch/arm/boot/dts/Makefile
>> +++ b/arch/arm/boot/dts/Makefile
>> @@ -72,6 +72,7 @@ dtb-$(CONFIG_ARCH_EXYNOS) += exynos4210-origen.dtb \
>>         exynos5250-arndale.dtb \
>>         exynos5250-smdk5250.dtb \
>>         exynos5250-snow.dtb \
>> +       exynos5260-xyref5260-evt0.dtb \
>>         exynos5420-arndale-octa.dtb \
>>         exynos5420-smdk5420.dtb \
>>         exynos5440-sd5v1.dtb \
>> diff --git a/arch/arm/boot/dts/exynos5260-xyref5260-evt0.dts
>> b/arch/arm/boot/dts/exynos5260-xyref5260-evt0.dts
>> new file mode 100644
>> index 0000000..d7d0aeb
>> --- /dev/null
>> +++ b/arch/arm/boot/dts/exynos5260-xyref5260-evt0.dts
>> @@ -0,0 +1,110 @@
>> +/*
>> + * SAMSUNG XYREF5260 EVT0 board device tree source
>> + *
>> + * Copyright (c) 2013 Samsung Electronics Co., Ltd.
>> + *             http://www.samsung.com
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> + * it under the terms of the GNU General Public License version 2 as
>> + * published by the Free Software Foundation.
>> +*/
>> +
>> +/dts-v1/;
>> +#include "exynos5260.dtsi"
>> +
>> +/ {
>> +       model = "SAMSUNG XYREF5260 EVT0 board based on EXYNOS5260";
>> +       compatible = "samsung,xyref5260", "samsung,exynos5260";
>> +
>> +       memory {
>> +               reg = <0x20000000 0x80000000>;
>> +       };
>> +
>> +       chosen {
>> +               bootargs = "console=ttySAC2,115200";
>> +       };
>> +
>> +       clocks {
>> +               fin_pll: xxti {
>> +                       compatible = "fixed-clock";
>> +                       clock-frequency = <24000000>;
>> +                       clock-output-names = "fin_pll";
>> +                       #clock-cells = <0>;
>> +               };
>> +
>> +               xrtcxti: xrtcxti {
>> +                       compatible = "fixed-clock";
>> +                       clock-frequency = <32768>;
>> +                       clock-output-names = "xrtcxti";
>> +               };
>
>
> clock-cells property is missing here.
>

I have added #clock-cells only for clocks which
are supposed to be referred. IMO we need it otherwise.

>
>> +
>> +               spdif_extclk: ioclk_spdif_extclk {
>> +                       compatible = "fixed-clock";
>> +                       clock-frequency = <49152000>;
>> +                       clock-output-names = "ioclk_spdif_extclk";
>> +               };
>
>
> ditto.
>
>> +       };
>> +};
>
>
> May I know why other phyclocks and ioclks have not been added?
>

Phyclocks should be added in SoC file. Please refer the other patch.

Ioclocks have 2 dimensions. 1) A board may or may not have these.
But if board doesn't have them, we may end up with orphans in clock
tree. 2) Adding them in SoC is not meaningful because rate is board
dependent and cannot be mentioned in SoC file. Without rate, probe
will not be successful.

What I followed here is adding IO clocks which are resulting into
orphan clocks.

What we can do is to allow the registration of fixed-io-clocks in clock
driver which are provided without RATE? If this looks good, I can post
the respective patch for clock driver and dt correction.

I want to request experts to comment on this.

Regards,
Rahul Sharma

>
>> +
>> +&pinctrl_0 {
>> +       hdmi_hpd_irq: hdmi-hpd-irq {
>> +               samsung,pins = "gpx3-7";
>> +               samsung,pin-function = <0>;
>> +               samsung,pin-pud = <1>;
>> +               samsung,pin-drv = <0>;
>> +       };
>> +};
>> +
>> +&uart0 {
>> +       status = "okay";
>> +};
>> +
>> +&uart1 {
>> +       status = "okay";
>> +};
>> +
>> +&uart2 {
>> +       status = "okay";
>> +};
>> +
>> +&uart3 {
>> +       status = "okay";
>> +};
>> +
>> +&mmc_0 {
>> +       status = "okay";
>> +       num-slots = <1>;
>> +       broken-cd;
>> +       bypass-smu;
>> +       supports-highspeed;
>> +       supports-hs200-mode; /* 200 Mhz */
>> +       card-detect-delay = <200>;
>> +       samsung,dw-mshc-ciu-div = <3>;
>> +       samsung,dw-mshc-sdr-timing = <0 4>;
>> +       samsung,dw-mshc-ddr-timing = <0 2>;
>> +       pinctrl-names = "default";
>> +       pinctrl-0 = <&sd0_rdqs &sd0_clk &sd0_cmd &sd0_bus1 &sd0_bus4
>> &sd0_bus8>;
>> +
>> +       slot at 0 {
>> +               reg = <0>;
>> +               bus-width = <8>;
>> +       };
>> +};
>> +
>> +&mmc_2 {
>> +       status = "okay";
>> +       num-slots = <1>;
>> +       supports-highspeed;
>> +       card-detect-delay = <200>;
>> +       samsung,dw-mshc-ciu-div = <3>;
>> +       samsung,dw-mshc-sdr-timing = <2 3>;
>> +       samsung,dw-mshc-ddr-timing = <1 2>;
>> +       pinctrl-names = "default";
>> +       pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_bus1 &sd2_bus4>;
>> +
>> +       slot at 0 {
>> +               reg = <0>;
>> +               bus-width = <4>;
>> +               disable-wp;
>> +       };
>> +};
>
>
>
> --
> Best Regards,
> Pankaj Dubey
>