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Message-ID: <54CB618E.60808@st.com>
Date: Fri, 30 Jan 2015 11:48:46 +0100
From: Maxime Coquelin <maxime.coquelin@...com>
To: Kishon Vijay Abraham I <kishon@...com>,
Peter Griffin <peter.griffin@...aro.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>, <srinivas.kandagatla@...il.com>,
<patrice.chotard@...com>, <peppe.cavallaro@...com>, <arnd@...db.de>
Cc: <lee.jones@...aro.org>, <devicetree@...r.kernel.org>,
<netdev@...r.kernel.org>
Subject: Re: [PATCH v2 2/7] phy: miphy365x: Pass sysconfig register offsets
via syscfg dt property.
Hi Kishon,
On 01/30/2015 11:35 AM, Kishon Vijay Abraham I wrote:
> Hi,
>
> On Wednesday 07 January 2015 08:34 PM, Peter Griffin wrote:
>> Based on Arnds review comments here https://lkml.org/lkml/2014/11/13/161,
>> update the miphy365 phy driver to access sysconfig register offsets via
>> syscfg dt property.
>>
>> This is because the reg property should not be mixing address spaces
>> like it does currently for miphy365. This change then also aligns us
>> to how other platforms such as keystone and bcm7445 pass there syscon
>> offsets via DT.
>>
>> This patch breaks DT compatibility, but this platform is considered WIP,
>> and is only used by a few developers who are upstreaming support for it.
>> This change has been done as a single atomic commit to ensure it is
>> bisectable.
> I'm dropping this from my tree since I didn't get Ack from
> "arch/arm/boot/dts/stih416.dtsi" Maintainer.
Sorry, on cover letter, I replied the series looked good to me.
So you can add:
Acked-by: Maxime Coquelin <maxime.coquelin@...com>
And even:
Tested-by: Maxime Coquelin <maxime.coquelin@...com>
Kind regards,
Maxime
>
> Thanks
> Kishon
>> Signed-off-by: Peter Griffin <peter.griffin@...aro.org>
>> Reviewed-by: Arnd Bergmann <arnd@...db.de>
>> ---
>> .../devicetree/bindings/phy/phy-miphy365x.txt | 15 +++++------
>> arch/arm/boot/dts/stih416.dtsi | 10 ++++----
>> drivers/phy/phy-miphy365x.c | 29 ++++++++--------------
>> 3 files changed, 23 insertions(+), 31 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/phy/phy-miphy365x.txt b/Documentation/devicetree/bindings/phy/phy-miphy365x.txt
>> index 42c8808..9802d5d 100644
>> --- a/Documentation/devicetree/bindings/phy/phy-miphy365x.txt
>> +++ b/Documentation/devicetree/bindings/phy/phy-miphy365x.txt
>> @@ -6,8 +6,10 @@ for SATA and PCIe.
>>
>> Required properties (controller (parent) node):
>> - compatible : Should be "st,miphy365x-phy"
>> -- st,syscfg : Should be a phandle of the system configuration register group
>> - which contain the SATA, PCIe mode setting bits
>> +- st,syscfg : Phandle / integer array property. Phandle of sysconfig group
>> + containing the miphy registers and integer array should contain
>> + an entry for each port sub-node, specifying the control
>> + register offset inside the sysconfig group.
>>
>> Required nodes : A sub-node is required for each channel the controller
>> provides. Address range information including the usual
>> @@ -26,7 +28,6 @@ Required properties (port (child) node):
>> registers filled in "reg":
>> - sata: For SATA devices
>> - pcie: For PCIe devices
>> - - syscfg: To specify the syscfg based config register
>>
>> Optional properties (port (child) node):
>> - st,sata-gen : Generation of locally attached SATA IP. Expected values
>> @@ -39,20 +40,20 @@ Example:
>>
>> miphy365x_phy: miphy365x@...82000 {
>> compatible = "st,miphy365x-phy";
>> - st,syscfg = <&syscfg_rear>;
>> + st,syscfg = <&syscfg_rear 0x824 0x828>;
>> #address-cells = <1>;
>> #size-cells = <1>;
>> ranges;
>>
>> phy_port0: port@...82000 {
>> - reg = <0xfe382000 0x100>, <0xfe394000 0x100>, <0x824 0x4>;
>> - reg-names = "sata", "pcie", "syscfg";
>> + reg = <0xfe382000 0x100>, <0xfe394000 0x100>;
>> + reg-names = "sata", "pcie";
>> #phy-cells = <1>;
>> st,sata-gen = <3>;
>> };
>>
>> phy_port1: port@...8a000 {
>> - reg = <0xfe38a000 0x100>, <0xfe804000 0x100>, <0x828 0x4>;;
>> + reg = <0xfe38a000 0x100>, <0xfe804000 0x100>;;
>> reg-names = "sata", "pcie", "syscfg";
>> #phy-cells = <1>;
>> st,pcie-tx-pol-inv;
>> diff --git a/arch/arm/boot/dts/stih416.dtsi b/arch/arm/boot/dts/stih416.dtsi
>> index fad9073..85afe01 100644
>> --- a/arch/arm/boot/dts/stih416.dtsi
>> +++ b/arch/arm/boot/dts/stih416.dtsi
>> @@ -283,21 +283,21 @@
>>
>> miphy365x_phy: phy@...82000 {
>> compatible = "st,miphy365x-phy";
>> - st,syscfg = <&syscfg_rear>;
>> + st,syscfg = <&syscfg_rear 0x824 0x828>;
>> #address-cells = <1>;
>> #size-cells = <1>;
>> ranges;
>>
>> phy_port0: port@...82000 {
>> #phy-cells = <1>;
>> - reg = <0xfe382000 0x100>, <0xfe394000 0x100>, <0x824 0x4>;
>> - reg-names = "sata", "pcie", "syscfg";
>> + reg = <0xfe382000 0x100>, <0xfe394000 0x100>;
>> + reg-names = "sata", "pcie";
>> };
>>
>> phy_port1: port@...8a000 {
>> #phy-cells = <1>;
>> - reg = <0xfe38a000 0x100>, <0xfe804000 0x100>, <0x828 0x4>;
>> - reg-names = "sata", "pcie", "syscfg";
>> + reg = <0xfe38a000 0x100>, <0xfe804000 0x100>;
>> + reg-names = "sata", "pcie";
>> };
>> };
>>
>> diff --git a/drivers/phy/phy-miphy365x.c b/drivers/phy/phy-miphy365x.c
>> index 6ab43a8..6c80154 100644
>> --- a/drivers/phy/phy-miphy365x.c
>> +++ b/drivers/phy/phy-miphy365x.c
>> @@ -141,7 +141,7 @@ struct miphy365x_phy {
>> bool pcie_tx_pol_inv;
>> bool sata_tx_pol_inv;
>> u32 sata_gen;
>> - u64 ctrlreg;
>> + u32 ctrlreg;
>> u8 type;
>> };
>>
>> @@ -179,7 +179,7 @@ static int miphy365x_set_path(struct miphy365x_phy *miphy_phy,
>> bool sata = (miphy_phy->type == MIPHY_TYPE_SATA);
>>
>> return regmap_update_bits(miphy_dev->regmap,
>> - (unsigned int)miphy_phy->ctrlreg,
>> + miphy_phy->ctrlreg,
>> SYSCFG_SELECT_SATA_MASK,
>> sata << SYSCFG_SELECT_SATA_POS);
>> }
>> @@ -445,7 +445,6 @@ int miphy365x_get_addr(struct device *dev, struct miphy365x_phy *miphy_phy,
>> {
>> struct device_node *phynode = miphy_phy->phy->dev.of_node;
>> const char *name;
>> - const __be32 *taddr;
>> int type = miphy_phy->type;
>> int ret;
>>
>> @@ -455,22 +454,6 @@ int miphy365x_get_addr(struct device *dev, struct miphy365x_phy *miphy_phy,
>> return ret;
>> }
>>
>> - if (!strncmp(name, "syscfg", 6)) {
>> - taddr = of_get_address(phynode, index, NULL, NULL);
>> - if (!taddr) {
>> - dev_err(dev, "failed to fetch syscfg address\n");
>> - return -EINVAL;
>> - }
>> -
>> - miphy_phy->ctrlreg = of_translate_address(phynode, taddr);
>> - if (miphy_phy->ctrlreg == OF_BAD_ADDR) {
>> - dev_err(dev, "failed to translate syscfg address\n");
>> - return -EINVAL;
>> - }
>> -
>> - return 0;
>> - }
>> -
>> if (!((!strncmp(name, "sata", 4) && type == MIPHY_TYPE_SATA) ||
>> (!strncmp(name, "pcie", 4) && type == MIPHY_TYPE_PCIE)))
>> return 0;
>> @@ -606,7 +589,15 @@ static int miphy365x_probe(struct platform_device *pdev)
>> return ret;
>>
>> phy_set_drvdata(phy, miphy_dev->phys[port]);
>> +
>> port++;
>> + /* sysconfig offsets are indexed from 1 */
>> + ret = of_property_read_u32_index(np, "st,syscfg", port,
>> + &miphy_phy->ctrlreg);
>> + if (ret) {
>> + dev_err(&pdev->dev, "No sysconfig offset found\n");
>> + return ret;
>> + }
>> }
>>
>> provider = devm_of_phy_provider_register(&pdev->dev, miphy365x_xlate);
>>
--
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