u-boot/doc/device-tree-bindings/video/exynos-fb.txt
Ajay Kumar 45c480c9f6 video: exynos_fimd: Add framework to disable FIMD sysmmu
On Exynos5420 and newer versions, the FIMD sysmmus are in
"on state" by default.
We have to disable them in order to make FIMD DMA work.
This patch adds the required framework to exynos_fimd driver,
and disables FIMD sysmmu on Exynos5420.

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2014-09-05 20:37:07 +09:00

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Text

Exynos Display Controller
=========================
Required properties:
SOC specific:
compatible: should be "samsung,exynos-fimd"
reg: Base address of FIMD IP.
Board(panel specific):
samsung,vl-col: X resolution of the panel
samsung,vl-row: Y resolution of the panel
samsung,vl-freq: Refresh rate
samsung,vl-bpix: Bits per pixel
samsung,vl-hspw: Hsync value
samsung,vl-hfpd: Right margin
samsung,vl-hbpd: Left margin
samsung,vl-vspw: Vsync value
samsung,vl-vfpd: Lower margin
samsung,vl-vbpd: Upper margin
Optional properties:
Board(panel specific):
samsung,vl-width: width of display area in mm
samsung,vl-height: Height of display area in mm
samsung,vl-clkp: Clock polarity
CONFIG_SYS_LOW if defined, else CONFIG_SYS_HIGH
samsung,vl-oep: Output Enable polarity
CONFIG_SYS_LOW if defined, else CONFIG_SYS_HIGH
samsung,vl-hsp: Horizontal Sync polarity
CONFIG_SYS_LOW if defined, else CONFIG_SYS_HIGH
samsung,vl-vsp: Vertical Sync polarity
CONFIG_SYS_LOW if defined, else CONFIG_SYS_HIGH
samsung,vl-dp: Data polarity
CONFIG_SYS_LOW if defined, else CONFIG_SYS_HIGH
samsung,vl-cmd-allow-len: Wait end of frame
samsung,winid: Window number on which data is to be displayed
samsung,init-delay: Delay before LCD initialization starts
samsung,power-on-delay: Delay after LCD is powered on
samsung,reset-delay: Delay after LCD is reset
samsung,interface-mode: 1(FIMD_RGB_INTERFACE), 2(FIMD_CPU_INTERFACE)
samsung,mipi-enabled: 1 if you want to use MIPI, else 0
samsung,dp-enabled: 1is you want to use DP, else 0
samsung,cs-setup: cs_setup value in FIMD_CPU_INTERFACE mode.
samsung,wr-setup: wr_setup value in FIMD_CPU_INTERFACE mode.
samsung,wr-act: wr_act value in FIMD_CPU_INTERFACE mode.
samsung,wr-hold: wr_hold value in FIMD_CPU_INTERFACE mode.
samsung,logo-on: 1 if you want to use custom logo.
0 if you want LCD console.
samsung,logo-width: pixel width of logo image. Valid if logo_on = 1
samsung,logo-height: pixel height of logo image. Valid if logo_on = 1
samsung,logo-addr: Address of logo image. Valid if logo_on = 1
samsung,rgb-mode: 0(MODE_RGB_P), 1(MODE_BGR_P),
2(MODE_RGB_S), 3(MODE_BGR_S)
samsung,pclk-name: parent clock identifier: 1(MPLL), 2(EPLL), 3(VPLL)
samsung,sclk-div: parent_clock/source_clock ratio
samsung,dual-lcd-enabled: 1 if you support two LCD, else 0
samsung,disable-sysmmu: Define this if you want to disable FIMD sysmmu.
(needed for Exynos5420 and newer versions)
Add the required FIMD sysmmu nodes to be
disabled with compatible string
"samsung,sysmmu-v3.3", with a "reg" property
holding the register address of FIMD sysmmu.
Example:
SOC specific part:
fimd@14400000 {
compatible = "samsung,exynos-fimd";
reg = <0x14400000 0x10000>;
#address-cells = <1>;
#size-cells = <1>;
};
Board specific part:
fimd@14400000 {
samsung,vl-freq = <60>;
samsung,vl-col = <2560>;
samsung,vl-row = <1600>;
samsung,vl-width = <2560>;
samsung,vl-height = <1600>;
samsung,vl-clkp;
samsung,vl-dp;
samsung,vl-bpix = <4>;
samsung,vl-hspw = <32>;
samsung,vl-hbpd = <80>;
samsung,vl-hfpd = <48>;
samsung,vl-vspw = <6>;
samsung,vl-vbpd = <37>;
samsung,vl-vfpd = <3>;
samsung,vl-cmd-allow-len = <0xf>;
samsung,winid = <3>;
samsung,interface-mode = <1>;
samsung,dp-enabled = <1>;
samsung,dual-lcd-enabled = <0>;
};