1. 29 Mar, 2016 24 commits
  2. 28 Mar, 2016 4 commits
    • Guy Thouret's avatar
      omap24xx_i2c: Implement CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW · 32b9b556
      Guy Thouret authored
      Signed-off-by: default avatarGuy Thouret <guy.thouret@wems.co.uk>
      Cc: Heiko Schocher <hs@denx.de>
      32b9b556
    • Peng Fan's avatar
      dm: i2c: mxc_i2c: implement i2c_idle_bus · e1bed802
      Peng Fan authored
      Implement i2c_idle_bus in driver, then setup_i2c can
      be dropped for boards which enable DM_I2C/DM_GPIO/PINCTRL.
      The i2c_idle_bus force bus idle flow follows setup_i2c in
      arch/arm/imx-common/i2c-mxv7.c
      
      This patch is an implementation following linux kernel patch:
      "
      commit 1c4b6c3bcf30d0804db0d0647d8ebeb862c6f7e5
      Author: Gao Pan <b54642@freescale.com>
      Date:   Fri Oct 23 20:28:54 2015 +0800
      
          i2c: imx: implement bus recovery
      
          Implement bus recovery methods for i2c-imx so we can recover from
          situations where SCL/SDA are stuck low.
      
          Once i2c bus SCL/SDA are stuck low during transfer, config the i2c
          pinctrl to gpio mode by calling pinctrl sleep set function, and then
          use GPIO to emulate the i2c protocol to send nine dummy clock to recover
          i2c device. After recovery, set i2c pinctrl to default group setting.
      "
      
      See Documentation/devicetree/bindings/i2c/i2c-imx.txt for detailed
      description.
      1. Introuduce scl_gpio/sda_gpio/bus in mxc_i2c_bus.
      2. Discard the __weak attribute for i2c_idle_bus and implement it,
         since we have pinctrl driver/driver model gpio driver. We can
         use device tree, but not let board code to do this.
      3. gpio state for mxc_i2c is not a must, but it is recommended. If
         there is no gpio state, driver will give tips, but not fail.
      4. The i2c controller was first probed, default pinctrl state will
         be used, so when need to use gpio function, need to do
         "pinctrl_select_state(dev, "gpio")" and after force bus idle,
         need to switch back "pinctrl_select_state(dev, "default")".
      
      This is example about how to use the gpio force bus
      idle function:
      "
       &i2c1 {
       	clock-frequency = <100000>;
      	pinctrl-names = "default", "gpio";
       	pinctrl-0 = <&pinctrl_i2c1>;
      	pinctrl-1 = <&pinctrl_i2c1_gpio>;
      	scl-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
      	sda-gpios = <&gpio1 29 GPIO_ACTIVE_HIGH>;
      	status = "okay";
      	[....]
       };
      
      [.....]
      
      	pinctrl_i2c1_gpio: i2c1grp_gpio {
      		fsl,pins = <
      			MX6UL_PAD_UART4_TX_DATA__GPIO1_IO28 0x1b8b0
      			MX6UL_PAD_UART4_RX_DATA__GPIO1_IO29 0x1b8b0
      		>;
      	};
      "
      Signed-off-by: default avatarPeng Fan <van.freenix@gmail.com>
      Cc: Albert Aribaud <albert.u.boot@aribaud.net>
      Cc: Stefano Babic <sbabic@denx.de>
      Cc: Heiko Schocher <hs@denx.de>
      Cc: Simon Glass <sjg@chromium.org>
      Cc: York Sun <york.sun@nxp.com>
      e1bed802
    • Tom Rini's avatar
      Revert "pxa_lcd: make driver cache-aware" · f3c2cab8
      Tom Rini authored
      This reverts commit 59deb7fe.
      Signed-off-by: Tom Rini's avatarTom Rini <trini@konsulko.com>
      f3c2cab8
    • Tom Rini's avatar
      Revert "pxa_lcd: invert colors for Zipit Z2 to get white on black palette" · 09bffbf6
      Tom Rini authored
      This reverts commit 3bc8ffd9.
      Signed-off-by: Tom Rini's avatarTom Rini <trini@konsulko.com>
      09bffbf6
  3. 27 Mar, 2016 12 commits