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Date: Fri, 14 Mar 2014 18:17:21 +0100
From: Tomasz Figa <t.figa@...sung.com>
To: Yuvaraj Kumar <yuvaraj.cd@...il.com>,
Kishon Vijay Abraham I <kishon@...com>
Cc: "kgene.kim@...sung.com" <kgene.kim@...sung.com>,
linux-kernel@...r.kernel.org,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
linux-doc@...r.kernel.org, Grant Likely <grant.likely@...aro.org>,
sunil joshi <joshi@...sung.com>,
Stephen Warren <swarren@...dotorg.org>,
Mark Rutland <mark.rutland@....com>,
Kumar Gala <galak@...eaurora.org>,
Jingoo Han <jg1.han@...sung.com>,
"ks.giri@...sung.com" <ks.giri@...sung.com>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
Christoffer Dall <christoffer.dall@...aro.com>,
Yuvaraj Kumar C D <yuvaraj.cd@...sung.com>
Subject: Re: RESEND [PATCH V9 2/2] ARM: dts: exynos5250: Enable ahci sata and
sata phy
Hi Yuvaraj,
On 14.03.2014 09:25, Yuvaraj Kumar wrote:
> kgene,
> Please pick this patch.
>
> On Tue, Mar 4, 2014 at 7:02 PM, Kishon Vijay Abraham I <kishon@...com> wrote:
>>
>>
>> On Tuesday 04 March 2014 04:40 PM, Yuvaraj Kumar C D wrote:
>>>
>>> This patch adds dt entry for ahci sata controller and its
>>> corresponding phy controller.phy node has been added w.r.t
>>> new generic phy framework.
>>>
>>> Signed-off-by: Yuvaraj Kumar C D <yuvaraj.cd@...sung.com>
>>
>>
>> FWIW
>> Acked-by: Kishon Vijay Abraham I <kishon@...com>
>>
>>> ---
>>> .../devicetree/bindings/ata/exynos-sata-phy.txt | 14 --------
>>> .../devicetree/bindings/ata/exynos-sata.txt | 25 +++++++++-----
>>> .../devicetree/bindings/phy/samsung-phy.txt | 36
>>> ++++++++++++++++++++
>>> arch/arm/boot/dts/exynos5250-arndale.dts | 21 ++++++++++++
>>> arch/arm/boot/dts/exynos5250-smdk5250.dts | 17 +++++----
>>> arch/arm/boot/dts/exynos5250.dtsi | 18 +++++++---
>>> 6 files changed, 98 insertions(+), 33 deletions(-)
>>> delete mode 100644
>>> Documentation/devicetree/bindings/ata/exynos-sata-phy.txt
>>>
>>> diff --git a/Documentation/devicetree/bindings/ata/exynos-sata-phy.txt
>>> b/Documentation/devicetree/bindings/ata/exynos-sata-phy.txt
>>> deleted file mode 100644
>>> index 37824fa..0000000
>>> --- a/Documentation/devicetree/bindings/ata/exynos-sata-phy.txt
>>> +++ /dev/null
>>> @@ -1,14 +0,0 @@
>>> -* Samsung SATA PHY Controller
>>> -
>>> -SATA PHY nodes are defined to describe on-chip SATA Physical layer
>>> controllers.
>>> -Each SATA PHY controller should have its own node.
>>> -
>>> -Required properties:
>>> -- compatible : compatible list, contains
>>> "samsung,exynos5-sata-phy"
>>> -- reg : <registers mapping>
>>> -
>>> -Example:
>>> - sata@...07000 {
>>> - compatible = "samsung,exynos5-sata-phy";
>>> - reg = <0xffe07000 0x1000>;
>>> - };
>>> diff --git a/Documentation/devicetree/bindings/ata/exynos-sata.txt
>>> b/Documentation/devicetree/bindings/ata/exynos-sata.txt
>>> index 0849f10..b2adb1f 100644
>>> --- a/Documentation/devicetree/bindings/ata/exynos-sata.txt
>>> +++ b/Documentation/devicetree/bindings/ata/exynos-sata.txt
>>> @@ -4,14 +4,21 @@ SATA nodes are defined to describe on-chip Serial ATA
>>> controllers.
>>> Each SATA controller should have its own node.
>>>
>>> Required properties:
>>> -- compatible : compatible list, contains "samsung,exynos5-sata"
>>> -- interrupts : <interrupt mapping for SATA IRQ>
>>> -- reg : <registers mapping>
>>> -- samsung,sata-freq : <frequency in MHz>
>>> +- compatible : compatible list, contains "samsung,exynos5-sata"
>>> +- interrupts : <interrupt mapping for SATA IRQ>
>>> +- reg : <registers mapping>
>>> +- samsung,sata-freq : <frequency in MHz>
>>> +- phys : as mentioned in phy-bindings.txt
>>> +- phy-names : as mentioned in phy-bindings.txt
>>>
>>> Example:
>>> - sata@...08000 {
>>> - compatible = "samsung,exynos5-sata";
>>> - reg = <0xffe08000 0x1000>;
>>> - interrupts = <115>;
>>> - };
>>> + sata@...f0000 {
>>> + compatible = "snps,dwc-ahci";
>>> + samsung,sata-freq = <66>;
>>> + reg = <0x122f0000 0x1ff>;
>>> + interrupts = <0 115 0>;
>>> + clocks = <&clock 277>, <&clock 143>;
>>> + clock-names = "sata", "sclk_sata";
>>> + phys = <&sata_phy>;
>>> + phy-names = "sata-phy";
>>> + };
>>> diff --git a/Documentation/devicetree/bindings/phy/samsung-phy.txt
>>> b/Documentation/devicetree/bindings/phy/samsung-phy.txt
>>> index c0fccaa..a937f75 100644
>>> --- a/Documentation/devicetree/bindings/phy/samsung-phy.txt
>>> +++ b/Documentation/devicetree/bindings/phy/samsung-phy.txt
>>> @@ -20,3 +20,39 @@ Required properties:
>>> - compatible : should be "samsung,exynos5250-dp-video-phy";
>>> - reg : offset and length of the Display Port PHY register set;
>>> - #phy-cells : from the generic PHY bindings, must be 0;
>>> +
>>> +Samsung SATA PHY Controller
>>> +---------------------------
>>> +
>>> +SATA PHY nodes are defined to describe on-chip SATA Physical layer
>>> controllers.
>>> +Each SATA PHY controller should have its own node.
>>> +
>>> +Required properties:
>>> +- compatible : compatible list, contains
>>> "samsung,exynos5250-sata-phy"
>>> +- reg : offset and length of the SATA PHY register set;
>>> +- #phy-cells : from the generic phy bindings;
>>> +
>>> +Example:
>>> + sata_phy: sata-phy@...70000 {
>>> + compatible = "samsung,exynos5250-sata-phy";
>>> + reg = <0x12170000 0x1ff>;
>>> + clocks = <&clock 287>;
>>> + clock-names = "sata_phyctrl";
>>> + #phy-cells = <0>;
>>> + samsung,exynos-sataphy-i2c-phandle = <&sata_phy_i2c>;
>>> + samsung,syscon-phandle = <&pmu_syscon>;
The example lists properties that are not documented by the text above
(clocks, clock-names, samsung,exynos-sataphy-i2c-phandle,
samsung,syscon-phandle). Why is so?
>>> + };
>>> +
>>> +Device-Tree bindings for sataphy i2c client driver
>>> +--------------------------------------------------
>>> +
>>> +Required properties:
>>> +compatible: Should be "samsung,exynos-sataphy-i2c"
>>> +- reg: I2C address of the sataphy i2c device.
>>> +
>>> +Example:
>>> +
>>> + sata_phy_i2c:sata-phy@38 {
>>> + compatible = "samsung,exynos-sataphy-i2c";
>>> + reg = <0x38>;
>>> + };
>>> diff --git a/arch/arm/boot/dts/exynos5250-arndale.dts
>>> b/arch/arm/boot/dts/exynos5250-arndale.dts
>>> index 38b96a4..97eef40 100644
>>> --- a/arch/arm/boot/dts/exynos5250-arndale.dts
>>> +++ b/arch/arm/boot/dts/exynos5250-arndale.dts
>>> @@ -375,6 +375,27 @@
>>> };
>>> };
>>>
>>> + i2c@...D0000 {
>>> + status = "okay";
>>> + samsung,i2c-sda-delay = <100>;
>>> + samsung,i2c-max-bus-freq = <40000>;
>>> + samsung,i2c-slave-addr = <0x38>;
>>> +
>>> + sata_phy_i2c:sata-phy@38 {
>>> + compatible = "samsung,exynos-sataphy-i2c";
>>> + reg = <0x38>;
>>> + };
This node should be present in SoC-level dtsi file, as the address of
the PHY does not depend on particular board.
>>> + };
>>> +
>>> + sata@...F0000 {
>>> + status = "okay";
>>> + };
>>> +
>>> + sata-phy@...70000 {
>>> + status = "okay";
>>> + samsung,exynos-sataphy-i2c-phandle = <&sata_phy_i2c>;
Same here. The value of samsung,exynos-sataphy-i2c-phandle property is
not board-specific and should be in higher level dtsi file.
>>> + };
>>> +
>>> mmc_0: mmc@...00000 {
>>> status = "okay";
>>> num-slots = <1>;
>>> diff --git a/arch/arm/boot/dts/exynos5250-smdk5250.dts
>>> b/arch/arm/boot/dts/exynos5250-smdk5250.dts
>>> index f76946e..81782c1b 100644
>>> --- a/arch/arm/boot/dts/exynos5250-smdk5250.dts
>>> +++ b/arch/arm/boot/dts/exynos5250-smdk5250.dts
>>> @@ -242,16 +242,12 @@
>>> samsung,i2c-slave-addr = <0x38>;
>>> status = "okay";
>>>
>>> - sata-phy {
>>> - compatible = "samsung,sata-phy";
>>> + sata_phy_i2c:sata-phy@38 {
>>> + compatible = "samsung,exynos-sataphy-i2c";
>>> reg = <0x38>;
>>> };
Ditto.
>>> };
>>>
>>> - sata@...F0000 {
>>> - samsung,sata-freq = <66>;
>>> - };
>>> -
>>> i2c@...80000 {
>>> samsung,i2c-sda-delay = <100>;
>>> samsung,i2c-max-bus-freq = <66000>;
>>> @@ -274,6 +270,15 @@
>>> };
>>> };
>>>
>>> + sata@...F0000 {
>>> + status = "okay";
>>> + };
>>> +
>>> + sata-phy@...70000 {
>>> + status = "okay";
>>> + samsung,exynos-sataphy-i2c-phandle = <&sata_phy_i2c>;
>>> + };
Ditto.
Best regards,
Tomasz
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