Merge tag 'mmc-v3.20-1' of git://git.linaro.org/people/ulf.hansson/mmc

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Support for MMC power sequences.
   - SDIO function devicetree subnode parsing.
   - Refactor the hardware reset routines and enable it for SD cards.
   - Various code quality improvements, especially for slot-gpio.

  MMC host:
   - dw_mmc: Various fixes and cleanups.
   - dw_mmc: Convert to mmc_send_tuning().
   - moxart: Fix probe logic.
   - sdhci: Various fixes and cleanups
   - sdhci: Asynchronous request handling support.
   - sdhci-pxav3: Various fixes and cleanups.
   - sdhci-tegra: Fixes for T114, T124 and T132.
   - rtsx: Various fixes and cleanups.
   - rtsx: Support for SDIO.
   - sdhi/tmio: Refactor and cleanup of header files.
   - omap_hsmmc: Use slot-gpio and common MMC DT parser.
   - Make all hosts to deal with errors from mmc_of_parse().
   - sunxi: Various fixes and cleanups.
   - sdhci: Support for Fujitsu SDHCI controller f_sdh30"

* tag 'mmc-v3.20-1' of git://git.linaro.org/people/ulf.hansson/mmc: (117 commits)
  mmc: sdhci-s3c: solve problem with sleeping in atomic context
  mmc: pwrseq: add driver for emmc hardware reset
  mmc: moxart: fix probe logic
  mmc: core: Invoke mmc_pwrseq_post_power_on() prior MMC_POWER_ON state
  mmc: pwrseq_simple: Add optional reference clock support
  mmc: pwrseq: Document optional clock for the simple power sequence
  mmc: pwrseq_simple: Extend to support more pins
  mmc: pwrseq: Document that simple sequence support more than one GPIO
  mmc: Add hardware dependencies for sdhci-pxav3 and sdhci-pxav2
  mmc: sdhci-pxav3: Modify clock settings for the SDR50 and DDR50 modes
  mmc: sdhci-pxav3: Extend binding with SDIO3 conf reg for the Armada 38x
  mmc: sdhci-pxav3: Fix Armada 38x controller's caps according to erratum ERR-7878951
  mmc: sdhci-pxav3: Fix SDR50 and DDR50 capabilities for the Armada 38x flavor
  mmc: sdhci: switch voltage before sdhci_set_ios in runtime resume
  mmc: tegra: Write xfer_mode, CMD regs in together
  mmc: Resolve BKOPS compatability issue
  mmc: sdhci-pxav3: fix setting of pdata->clk_delay_cycles
  mmc: dw_mmc: rockchip: remove incorrect __exit_p()
  mmc: dw_mmc: exynos: remove incorrect __exit_p()
  mmc: Fix menuconfig alignment of MMC_SDHCI_* options
  ...

5 files changed, 152 insertions, 5 deletions

diff --git a/Documentation/devicetree/bindings/mmc/mmc-pwrseq-emmc.txt b/Documentation/devicetree/bindings/mmc/mmc-pwrseq-emmc.txt
new file mode 100644
index 00000000000..0cb827bf943
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/mmc-pwrseq-emmc.txt
@@ -0,0 +1,25 @@
+* The simple eMMC hardware reset provider
+
+The purpose of this driver is to perform standard eMMC hw reset
+procedure, as descibed by Jedec 4.4 specification. This procedure is
+performed just after MMC core enabled power to the given mmc host (to
+fix possible issues if bootloader has left eMMC card in initialized or
+unknown state), and before performing complete system reboot (also in
+case of emergency reboot call). The latter is needed on boards, which
+doesn't have hardware reset logic connected to emmc card and (limited or
+broken) ROM bootloaders are unable to read second stage from the emmc
+card if the card is left in unknown or already initialized state.
+
+Required properties:
+- compatible : contains "mmc-pwrseq-emmc".
+- reset-gpios : contains a GPIO specifier. The reset GPIO is asserted
+	and then deasserted to perform eMMC card reset. To perform
+	reset procedure as described in Jedec 4.4 specification, the
+	gpio line should be defined as GPIO_ACTIVE_LOW.
+
+Example:
+
+	sdhci0_pwrseq {
+		compatible = "mmc-pwrseq-emmc";
+		reset-gpios = <&gpio1 12 GPIO_ACTIVE_LOW>;
+	}
diff --git a/Documentation/devicetree/bindings/mmc/mmc-pwrseq-simple.txt b/Documentation/devicetree/bindings/mmc/mmc-pwrseq-simple.txt
new file mode 100644
index 00000000000..a462c50f19a
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/mmc-pwrseq-simple.txt
@@ -0,0 +1,25 @@
+* The simple MMC power sequence provider
+
+The purpose of the simple MMC power sequence provider is to supports a set of
+common properties between various SOC designs. It thus enables us to use the
+same provider for several SOC designs.
+
+Required properties:
+- compatible : contains "mmc-pwrseq-simple".
+
+Optional properties:
+- reset-gpios : contains a list of GPIO specifiers. The reset GPIOs are asserted
+	at initialization and prior we start the power up procedure of the card.
+	They will be de-asserted right after the power has been provided to the
+	card.
+- clocks : Must contain an entry for the entry in clock-names.
+  See ../clocks/clock-bindings.txt for details.
+- clock-names : Must include the following entry:
+  "ext_clock" (External clock provided to the card).
+
+Example:
+
+	sdhci0_pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		reset-gpios = <&gpio1 12 0>;
+	}
diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt
index b52628b18a5..438899e8829 100644
--- a/Documentation/devicetree/bindings/mmc/mmc.txt
+++ b/Documentation/devicetree/bindings/mmc/mmc.txt
@@ -64,7 +64,43 @@ Optional SDIO properties:
 - keep-power-in-suspend: Preserves card power during a suspend/resume cycle
 - enable-sdio-wakeup: Enables wake up of host system on SDIO IRQ assertion
 
-Example:
+
+MMC power sequences:
+--------------------
+
+System on chip designs may specify a specific MMC power sequence. To
+successfully detect an (e)MMC/SD/SDIO card, that power sequence must be
+maintained while initializing the card.
+
+Optional property:
+- mmc-pwrseq: phandle to the MMC power sequence node. See "mmc-pwrseq-*"
+	for documentation of MMC power sequence bindings.
+
+
+Use of Function subnodes
+------------------------
+
+On embedded systems the cards connected to a host may need additional
+properties. These can be specified in subnodes to the host controller node.
+The subnodes are identified by the standard 'reg' property.
+Which information exactly can be specified depends on the bindings for the
+SDIO function driver for the subnode, as specified by the compatible string.
+
+Required host node properties when using function subnodes:
+- #address-cells: should be one. The cell is the slot id.
+- #size-cells: should be zero.
+
+Required function subnode properties:
+- compatible: name of SDIO function following generic names recommended practice
+- reg: Must contain the SDIO function number of the function this subnode
+       describes. A value of 0 denotes the memory SD function, values from
+       1 to 7 denote the SDIO functions.
+
+
+Examples
+--------
+
+Basic example:
 
 sdhci@ab000000 {
 	compatible = "sdhci";
@@ -77,4 +113,28 @@ sdhci@ab000000 {
 	max-frequency = <50000000>;
 	keep-power-in-suspend;
 	enable-sdio-wakeup;
+	mmc-pwrseq = <&sdhci0_pwrseq>
 }
+
+Example with sdio function subnode:
+
+mmc3: mmc@01c12000 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&mmc3_pins_a>;
+	vmmc-supply = <&reg_vmmc3>;
+	bus-width = <4>;
+	non-removable;
+	mmc-pwrseq = <&sdhci0_pwrseq>
+	status = "okay";
+
+	brcmf: bcrmf@1 {
+		reg = <1>;
+		compatible = "brcm,bcm43xx-fmac";
+		interrupt-parent = <&pio>;
+		interrupts = <10 8>; /* PH10 / EINT10 */
+		interrupt-names = "host-wake";
+	};
+};
diff --git a/Documentation/devicetree/bindings/mmc/sdhci-fujitsu.txt b/Documentation/devicetree/bindings/mmc/sdhci-fujitsu.txt
new file mode 100644
index 00000000000..de2c53cff4f
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/sdhci-fujitsu.txt
@@ -0,0 +1,30 @@
+* Fujitsu SDHCI controller
+
+This file documents differences between the core properties in mmc.txt
+and the properties used by the sdhci_f_sdh30 driver.
+
+Required properties:
+- compatible: "fujitsu,mb86s70-sdhci-3.0"
+- clocks: Must contain an entry for each entry in clock-names. It is a
+  list of phandles and clock-specifier pairs.
+  See ../clocks/clock-bindings.txt for details.
+- clock-names: Should contain the following two entries:
+	"iface" - clock used for sdhci interface
+	"core"  - core clock for sdhci controller
+
+Optional properties:
+- vqmmc-supply: phandle to the regulator device tree node, mentioned
+  as the VCCQ/VDD_IO supply in the eMMC/SD specs.
+
+Example:
+
+	sdhci1: mmc@36600000 {
+		compatible = "fujitsu,mb86s70-sdhci-3.0";
+		reg = <0 0x36600000 0x1000>;
+		interrupts = <0 172 0x4>,
+			     <0 173 0x4>;
+		bus-width = <4>;
+		vqmmc-supply = <&vccq_sdhci1>;
+		clocks = <&clock 2 2 0>, <&clock 2 3 0>;
+		clock-names = "iface", "core";
+	};
diff --git a/Documentation/devicetree/bindings/mmc/sdhci-pxa.txt b/Documentation/devicetree/bindings/mmc/sdhci-pxa.txt
index 4dd6deb9071..3d1b449d609 100644
--- a/Documentation/devicetree/bindings/mmc/sdhci-pxa.txt
+++ b/Documentation/devicetree/bindings/mmc/sdhci-pxa.txt
@@ -9,9 +9,13 @@ Required properties:
 - reg:
   * for "mrvl,pxav2-mmc" and "mrvl,pxav3-mmc", one register area for
     the SDHCI registers.
-  * for "marvell,armada-380-sdhci", two register areas. The first one
-    for the SDHCI registers themselves, and the second one for the
-    AXI/Mbus bridge registers of the SDHCI unit.
+
+  * for "marvell,armada-380-sdhci", three register areas. The first
+    one for the SDHCI registers themselves, the second one for the
+    AXI/Mbus bridge registers of the SDHCI unit, the third one for the
+    SDIO3 Configuration register
+- reg names: should be "sdhci", "mbus", "conf-sdio3". only mandatory
+  for "marvell,armada-380-sdhci"
 - clocks: Array of clocks required for SDHCI; requires at least one for
     I/O clock.
 - clock-names: Array of names corresponding to clocks property; shall be
@@ -35,7 +39,10 @@ sdhci@d4280800 {
 
 sdhci@d8000 {
 	compatible = "marvell,armada-380-sdhci";
-	reg = <0xd8000 0x1000>, <0xdc000 0x100>;
+	reg-names = "sdhci", "mbus", "conf-sdio3";
+	reg = <0xd8000 0x1000>,
+		<0xdc000 0x100>;
+		<0x18454 0x4>;
 	interrupts = <0 25 0x4>;
 	clocks = <&gateclk 17>;
 	clock-names = "io";