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