HI Rob,
Thanks for your time.
On 09/21/2015 08:03 PM, Rob Herring wrote:
On 09/17/2015 04:45 AM, Alim Akhtar wrote:
From: Seungwon Jeon <essuuj@xxxxxxxxx>
This patch introduces Exynos UFS PHY driver. This driver
supports to deal with phy calibration and power control
according to UFS host driver's behavior.
Signed-off-by: Seungwon Jeon <essuuj@xxxxxxxxx>
Signed-off-by: Alim Akhtar <alim.akhtar@xxxxxxxxxxx>
Cc: Kishon Vijay Abraham I <kishon@xxxxxx>
---
.../devicetree/bindings/phy/samsung-phy.txt | 22 ++
It is preferred to put the binding in a separate patch.
Ok, will make a separate patch to add bindings.
drivers/phy/Kconfig | 7 +
drivers/phy/Makefile | 1 +
drivers/phy/phy-exynos-ufs.c | 262 ++++++++++++++++++++
drivers/phy/phy-exynos-ufs.h | 85 +++++++
drivers/phy/phy-exynos7-ufs.h | 89 +++++++
include/linux/phy/phy-exynos-ufs.h | 107 ++++++++
7 files changed, 573 insertions(+)
create mode 100644 drivers/phy/phy-exynos-ufs.c
create mode 100644 drivers/phy/phy-exynos-ufs.h
create mode 100644 drivers/phy/phy-exynos7-ufs.h
create mode 100644 include/linux/phy/phy-exynos-ufs.h
diff --git a/Documentation/devicetree/bindings/phy/samsung-phy.txt b/Documentation/devicetree/bindings/phy/samsung-phy.txt
index 60c6f2a..1abe2c4 100644
--- a/Documentation/devicetree/bindings/phy/samsung-phy.txt
+++ b/Documentation/devicetree/bindings/phy/samsung-phy.txt
@@ -174,3 +174,25 @@ Example:
usbdrdphy0 = &usb3_phy0;
usbdrdphy1 = &usb3_phy1;
};
+
+Samsung Exynos7 soc serise UFS PHY Controller
s/serise/series/
ok
+---------------------------------------------
+
+UFS PHY nodes are defined to describe on-chip UFS Physical layer controllers.
+Each UFS PHY controller should have its own node.
+
+Required properties:
+- compatible : compatible list, contains "samsung,exynos7-ufs-phy"
+- reg : offset and length of the UFS PHY register set;
+- reg-names : reg name(s) must be 'phy-pma';
+- #phy-cells : must be zero
+- samsung,syscon-phandle : a phandle to the PMU system controller, no arguments
How about samsung,pmu-syscon as syscon can mean a variety of things?
agree, will change it.
+
+Example:
+ ufs_phy: ufs-phy@0x15571800 {
+ compatible = "samsung,exynos7-ufs-phy";
+ reg = <0x15571800 0x240>;
+ reg-names = "phy-pma";
+ samsung,syscon-phandle = <&pmu_system_controller>;
+ #phy-cells = <0>;
+ };
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index 6b8dd16..7449376 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -358,4 +358,11 @@ config PHY_BRCMSTB_SATA
Enable this to support the SATA3 PHY on 28nm Broadcom STB SoCs.
Likely useful only with CONFIG_SATA_BRCMSTB enabled.
+config PHY_EXYNOS_UFS
+ tristate "EXYNOS SoC series UFS PHY driver"
+ depends on OF && ARCH_EXYNOS
|| COMPILE_TEST
ok will add
+ select GENERIC_PHY
+ help
+ Support for UFS PHY on Samsung EXYNOS chipsets.
+
endmenu
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