Merge tag 'omap-for-v3.10/gpmc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/drivers

From Tony Lindgren <tony@atomide.com>:

GPMC updates from Jon Hunter <jon-hunter@ti.com>:

Adds GPMC (General Purpose Memory Controller) DT support for
NOR flash and Ethernet and includes various GPMC cleans-up
and fixes.

This series is dependent on commit 7185684 (ARM: OMAP: use
consistent error checking) from RMK's clean-up branch and commit
31d9adc (ARM: OMAP2+: Fix broken gpmc support).

* tag 'omap-for-v3.10/gpmc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (29 commits)
  ARM: OMAP2+: Add GPMC DT support for Ethernet child nodes
  ARM: OMAP2+: rename gpmc_probe_nor_child() to gpmc_probe_generic_child()
  ARM: OMAP2+: return -ENODEV if GPMC child device creation fails
  ARM: OMAP2+: Allow GPMC probe to complete even if CS mapping fails
  ARM: OMAP2+: Remove unnecesssary GPMC definitions and variable
  ARM: OMAP2+: Detect incorrectly aligned GPMC base address
  ARM: OMAP2+: Convert ONENAND to retrieve GPMC settings from DT
  ARM: OMAP2+: Convert NAND to retrieve GPMC settings from DT
  ARM: OMAP2+: Add device-tree support for NOR flash
  ARM: OMAP2+: Add additional GPMC timing parameters
  ARM: OMAP2+: Add function to read GPMC settings from device-tree
  ARM: OMAP2+: Don't configure of chip-select options in gpmc_cs_configure()
  ARM: OMAP2+: Convert TUSB to use gpmc_cs_program_settings()
  ARM: OMAP2+: Convert SMC91x to use gpmc_cs_program_settings()
  ARM: OMAP2+: Convert NAND to use gpmc_cs_program_settings()
  ARM: OMAP2+: Convert ONENAND to use gpmc_cs_program_settings()
  ARM: OMAP2+: Add function for configuring GPMC settings
  ARM: OMAP2+: Add structure for storing GPMC settings
  ARM: OMAP2+: Add variable to store number of GPMC waitpins
  ARM: OMAP2+: Simplify code configuring ONENAND devices
  ...

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

4 files changed, 273 insertions, 28 deletions

diff --git a/Documentation/devicetree/bindings/bus/ti-gpmc.txt b/Documentation/devicetree/bindings/bus/ti-gpmc.txt
index 5ddb2e9efaa..4b87ea1194e 100644
--- a/Documentation/devicetree/bindings/bus/ti-gpmc.txt
+++ b/Documentation/devicetree/bindings/bus/ti-gpmc.txt
@@ -35,36 +35,83 @@ Required properties:
 
 Timing properties for child nodes. All are optional and default to 0.
 
- - gpmc,sync-clk:	Minimum clock period for synchronous mode, in picoseconds
-
- Chip-select signal timings corresponding to GPMC_CONFIG2:
- - gpmc,cs-on:		Assertion time
- - gpmc,cs-rd-off:	Read deassertion time
- - gpmc,cs-wr-off:	Write deassertion time
-
- ADV signal timings corresponding to GPMC_CONFIG3:
- - gpmc,adv-on:		Assertion time
- - gpmc,adv-rd-off:	Read deassertion time
- - gpmc,adv-wr-off:	Write deassertion time
-
- WE signals timings corresponding to GPMC_CONFIG4:
- - gpmc,we-on:		Assertion time
- - gpmc,we-off:		Deassertion time
-
- OE signals timings corresponding to GPMC_CONFIG4:
- - gpmc,oe-on:		Assertion time
- - gpmc,oe-off:		Deassertion time
-
- Access time and cycle time timings corresponding to GPMC_CONFIG5:
- - gpmc,page-burst-access: Multiple access word delay
- - gpmc,access:		Start-cycle to first data valid delay
- - gpmc,rd-cycle:	Total read cycle time
- - gpmc,wr-cycle:	Total write cycle time
+ - gpmc,sync-clk-ps:	Minimum clock period for synchronous mode, in picoseconds
+
+ Chip-select signal timings (in nanoseconds) corresponding to GPMC_CONFIG2:
+ - gpmc,cs-on-ns:	Assertion time
+ - gpmc,cs-rd-off-ns:	Read deassertion time
+ - gpmc,cs-wr-off-ns:	Write deassertion time
+
+ ADV signal timings (in nanoseconds) corresponding to GPMC_CONFIG3:
+ - gpmc,adv-on-ns:	Assertion time
+ - gpmc,adv-rd-off-ns:	Read deassertion time
+ - gpmc,adv-wr-off-ns:	Write deassertion time
+
+ WE signals timings (in nanoseconds) corresponding to GPMC_CONFIG4:
+ - gpmc,we-on-ns	Assertion time
+ - gpmc,we-off-ns:	Deassertion time
+
+ OE signals timings (in nanoseconds) corresponding to GPMC_CONFIG4:
+ - gpmc,oe-on-ns:	Assertion time
+ - gpmc,oe-off-ns:	Deassertion time
+
+ Access time and cycle time timings (in nanoseconds) corresponding to
+ GPMC_CONFIG5:
+ - gpmc,page-burst-access-ns: 	Multiple access word delay
+ - gpmc,access-ns:		Start-cycle to first data valid delay
+ - gpmc,rd-cycle-ns:		Total read cycle time
+ - gpmc,wr-cycle-ns:		Total write cycle time
+ - gpmc,bus-turnaround-ns:	Turn-around time between successive accesses
+ - gpmc,cycle2cycle-delay-ns:	Delay between chip-select pulses
+ - gpmc,clk-activation-ns: 	GPMC clock activation time
+ - gpmc,wait-monitoring-ns:	Start of wait monitoring with regard to valid
+				data
+
+Boolean timing parameters. If property is present parameter enabled and
+disabled if omitted:
+ - gpmc,adv-extra-delay:	ADV signal is delayed by half GPMC clock
+ - gpmc,cs-extra-delay:		CS signal is delayed by half GPMC clock
+ - gpmc,cycle2cycle-diffcsen:	Add "cycle2cycle-delay" between successive
+				accesses to a different CS
+ - gpmc,cycle2cycle-samecsen:	Add "cycle2cycle-delay" between successive
+				accesses to the same CS
+ - gpmc,oe-extra-delay:		OE signal is delayed by half GPMC clock
+ - gpmc,we-extra-delay:		WE signal is delayed by half GPMC clock
+ - gpmc,time-para-granularity:	Multiply all access times by 2
 
 The following are only applicable to OMAP3+ and AM335x:
- - gpmc,wr-access
- - gpmc,wr-data-mux-bus
-
+ - gpmc,wr-access-ns:		In synchronous write mode, for single or
+				burst accesses, defines the number of
+				GPMC_FCLK cycles from start access time
+				to the GPMC_CLK rising edge used by the
+				memory device for the first data capture.
+ - gpmc,wr-data-mux-bus-ns:	In address-data multiplex mode, specifies
+				the time when the first data is driven on
+				the address-data bus.
+
+GPMC chip-select settings properties for child nodes. All are optional.
+
+- gpmc,burst-length	Page/burst length. Must be 4, 8 or 16.
+- gpmc,burst-wrap	Enables wrap bursting
+- gpmc,burst-read	Enables read page/burst mode
+- gpmc,burst-write	Enables write page/burst mode
+- gpmc,device-nand	Device is NAND
+- gpmc,device-width	Total width of device(s) connected to a GPMC
+			chip-select in bytes. The GPMC supports 8-bit
+			and 16-bit devices and so this property must be
+			1 or 2.
+- gpmc,mux-add-data	Address and data multiplexing configuration.
+			Valid values are 1 for address-address-data
+			multiplexing mode and 2 for address-data
+			multiplexing mode.
+- gpmc,sync-read	Enables synchronous read. Defaults to asynchronous
+			is this is not set.
+- gpmc,sync-write	Enables synchronous writes. Defaults to asynchronous
+			is this is not set.
+- gpmc,wait-pin		Wait-pin used by client. Must be less than
+			"gpmc,num-waitpins".
+- gpmc,wait-on-read	Enables wait monitoring on reads.
+- gpmc,wait-on-write	Enables wait monitoring on writes.
 
 Example for an AM33xx board:
 
diff --git a/Documentation/devicetree/bindings/mtd/gpmc-nor.txt b/Documentation/devicetree/bindings/mtd/gpmc-nor.txt
new file mode 100644
index 00000000000..420b3ab1889
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/gpmc-nor.txt
@@ -0,0 +1,98 @@
+Device tree bindings for NOR flash connect to TI GPMC
+
+NOR flash connected to the TI GPMC (found on OMAP boards) are represented as
+child nodes of the GPMC controller with a name of "nor".
+
+All timing relevant properties as well as generic GPMC child properties are
+explained in a separate documents. Please refer to
+Documentation/devicetree/bindings/bus/ti-gpmc.txt
+
+Required properties:
+- bank-width: 		Width of NOR flash in bytes. GPMC supports 8-bit and
+			16-bit devices and so must be either 1 or 2 bytes.
+- compatible:		Documentation/devicetree/bindings/mtd/mtd-physmap.txt
+- gpmc,cs-on-ns:		Chip-select assertion time
+- gpmc,cs-rd-off-ns:	Chip-select de-assertion time for reads
+- gpmc,cs-wr-off-ns:	Chip-select de-assertion time for writes
+- gpmc,oe-on-ns:	Output-enable assertion time
+- gpmc,oe-off-ns:	Output-enable de-assertion time
+- gpmc,we-on-ns		Write-enable assertion time
+- gpmc,we-off-ns:	Write-enable de-assertion time
+- gpmc,access-ns:	Start cycle to first data capture (read access)
+- gpmc,rd-cycle-ns:	Total read cycle time
+- gpmc,wr-cycle-ns:	Total write cycle time
+- linux,mtd-name:	Documentation/devicetree/bindings/mtd/mtd-physmap.txt
+- reg:			Chip-select, base address (relative to chip-select)
+			and size of NOR flash. Note that base address will be
+			typically 0 as this is the start of the chip-select.
+
+Optional properties:
+- gpmc,XXX		Additional GPMC timings and settings parameters. See
+			Documentation/devicetree/bindings/bus/ti-gpmc.txt
+
+Optional properties for partiton table parsing:
+- #address-cells: should be set to 1
+- #size-cells: should be set to 1
+
+Example:
+
+gpmc: gpmc@6e000000 {
+	compatible = "ti,omap3430-gpmc", "simple-bus";
+	ti,hwmods = "gpmc";
+	reg = <0x6e000000 0x1000>;
+	interrupts = <20>;
+	gpmc,num-cs = <8>;
+	gpmc,num-waitpins = <4>;
+	#address-cells = <2>;
+	#size-cells = <1>;
+
+	ranges = <0 0 0x10000000 0x08000000>;
+
+	nor@0,0 {
+		compatible = "cfi-flash";
+		linux,mtd-name= "intel,pf48f6000m0y1be";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		reg = <0 0 0x08000000>;
+		bank-width = <2>;
+
+		gpmc,mux-add-data;
+		gpmc,cs-on-ns = <0>;
+		gpmc,cs-rd-off-ns = <186>;
+		gpmc,cs-wr-off-ns = <186>;
+		gpmc,adv-on-ns = <12>;
+		gpmc,adv-rd-off-ns = <48>;
+		gpmc,adv-wr-off-ns = <48>;
+		gpmc,oe-on-ns = <54>;
+		gpmc,oe-off-ns = <168>;
+		gpmc,we-on-ns = <54>;
+		gpmc,we-off-ns = <168>;
+		gpmc,rd-cycle-ns = <186>;
+		gpmc,wr-cycle-ns = <186>;
+		gpmc,access-ns = <114>;
+		gpmc,page-burst-access-ns = <6>;
+		gpmc,bus-turnaround-ns = <12>;
+		gpmc,cycle2cycle-delay-ns = <18>;
+		gpmc,wr-data-mux-bus-ns = <90>;
+		gpmc,wr-access-ns = <186>;
+		gpmc,cycle2cycle-samecsen;
+		gpmc,cycle2cycle-diffcsen;
+
+		partition@0 {
+			label = "bootloader-nor";
+			reg = <0 0x40000>;
+		};
+		partition@0x40000 {
+			label = "params-nor";
+			reg = <0x40000 0x40000>;
+		};
+		partition@0x80000 {
+			label = "kernel-nor";
+			reg = <0x80000 0x200000>;
+		};
+		partition@0x280000 {
+			label = "filesystem-nor";
+			reg = <0x240000 0x7d80000>;
+		};
+	};
+};
diff --git a/Documentation/devicetree/bindings/mtd/gpmc-onenand.txt b/Documentation/devicetree/bindings/mtd/gpmc-onenand.txt
index deec9da224a..b7529424ac8 100644
--- a/Documentation/devicetree/bindings/mtd/gpmc-onenand.txt
+++ b/Documentation/devicetree/bindings/mtd/gpmc-onenand.txt
@@ -10,6 +10,8 @@ Documentation/devicetree/bindings/bus/ti-gpmc.txt
 Required properties:
 
  - reg:			The CS line the peripheral is connected to
+ - gpmc,device-width	Width of the ONENAND device connected to the GPMC
+			in bytes. Must be 1 or 2.
 
 Optional properties:
 
@@ -34,6 +36,7 @@ Example for an OMAP3430 board:
 
 		onenand@0 {
 			reg = <0 0 0>; /* CS0, offset 0 */
+			gpmc,device-width = <2>;
 
 			#address-cells = <1>;
 			#size-cells = <1>;
diff --git a/Documentation/devicetree/bindings/net/gpmc-eth.txt b/Documentation/devicetree/bindings/net/gpmc-eth.txt
new file mode 100644
index 00000000000..24cb4e46f67
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/gpmc-eth.txt
@@ -0,0 +1,97 @@
+Device tree bindings for Ethernet chip connected to TI GPMC
+
+Besides being used to interface with external memory devices, the
+General-Purpose Memory Controller can be used to connect Pseudo-SRAM devices
+such as ethernet controllers to processors using the TI GPMC as a data bus.
+
+Ethernet controllers connected to TI GPMC are represented as child nodes of
+the GPMC controller with an "ethernet" name.
+
+All timing relevant properties as well as generic GPMC child properties are
+explained in a separate documents. Please refer to
+Documentation/devicetree/bindings/bus/ti-gpmc.txt
+
+For the properties relevant to the ethernet controller connected to the GPMC
+refer to the binding documentation of the device. For example, the documentation
+for the SMSC 911x is Documentation/devicetree/bindings/net/smsc911x.txt
+
+Child nodes need to specify the GPMC bus address width using the "bank-width"
+property but is possible that an ethernet controller also has a property to
+specify the I/O registers address width. Even when the GPMC has a maximum 16-bit
+address width, it supports devices with 32-bit word registers.
+For example with an SMSC LAN911x/912x controller connected to the TI GPMC on an
+OMAP2+ board, "bank-width = <2>;" and "reg-io-width = <4>;".
+
+Required properties:
+- bank-width: 		Address width of the device in bytes. GPMC supports 8-bit
+			and 16-bit devices and so must be either 1 or 2 bytes.
+- compatible:		Compatible string property for the ethernet child device.
+- gpmc,cs-on:		Chip-select assertion time
+- gpmc,cs-rd-off:	Chip-select de-assertion time for reads
+- gpmc,cs-wr-off:	Chip-select de-assertion time for writes
+- gpmc,oe-on:		Output-enable assertion time
+- gpmc,oe-off		Output-enable de-assertion time
+- gpmc,we-on:		Write-enable assertion time
+- gpmc,we-off:		Write-enable de-assertion time
+- gpmc,access:		Start cycle to first data capture (read access)
+- gpmc,rd-cycle:	Total read cycle time
+- gpmc,wr-cycle:	Total write cycle time
+- reg:			Chip-select, base address (relative to chip-select)
+			and size of the memory mapped for the device.
+			Note that base address will be typically 0 as this
+			is the start of the chip-select.
+
+Optional properties:
+- gpmc,XXX		Additional GPMC timings and settings parameters. See
+			Documentation/devicetree/bindings/bus/ti-gpmc.txt
+
+Example:
+
+gpmc: gpmc@6e000000 {
+	compatible = "ti,omap3430-gpmc";
+	ti,hwmods = "gpmc";
+	reg = <0x6e000000 0x1000>;
+	interrupts = <20>;
+	gpmc,num-cs = <8>;
+	gpmc,num-waitpins = <4>;
+	#address-cells = <2>;
+	#size-cells = <1>;
+
+	ranges = <5 0 0x2c000000 0x1000000>;
+
+	ethernet@5,0 {
+		compatible = "smsc,lan9221", "smsc,lan9115";
+		reg = <5 0 0xff>;
+		bank-width = <2>;
+
+		gpmc,mux-add-data;
+		gpmc,cs-on = <0>;
+		gpmc,cs-rd-off = <186>;
+		gpmc,cs-wr-off = <186>;
+		gpmc,adv-on = <12>;
+		gpmc,adv-rd-off = <48>;
+		gpmc,adv-wr-off = <48>;
+		gpmc,oe-on = <54>;
+		gpmc,oe-off = <168>;
+		gpmc,we-on = <54>;
+		gpmc,we-off = <168>;
+		gpmc,rd-cycle = <186>;
+		gpmc,wr-cycle = <186>;
+		gpmc,access = <114>;
+		gpmc,page-burst-access = <6>;
+		gpmc,bus-turnaround = <12>;
+		gpmc,cycle2cycle-delay = <18>;
+		gpmc,wr-data-mux-bus = <90>;
+		gpmc,wr-access = <186>;
+		gpmc,cycle2cycle-samecsen;
+		gpmc,cycle2cycle-diffcsen;
+
+		interrupt-parent = <&gpio6>;
+		interrupts = <16>;
+		vmmc-supply = <&vddvario>;
+		vmmc_aux-supply = <&vdd33a>;
+		reg-io-width = <4>;
+
+		smsc,save-mac-address;
+	};
+};