Hi,
On Wednesday 06 April 2011 07:25 AM, Juha Kuikka wrote:
Hi,
I am working on a custom board with DM3730 and a DSI panel and I have
a problem in powering on the DSI complex IO block.
The DSS DSI initialization fails with:
omapdss DSI: dsi_complexio_init
omapdss DSI error: complexio reset not done!<-- my own addition
omapdss DSI error: failed to set complexio power state to 1
Can you check if the necessary pad/pin-muxing has been done for the DSI
lanes?
Archit
The DSI PLL is used and configured according to the example values in
the TRM (not proper for our panel but they should enable the complex
IO to at least power on, right).
Output form DSS DEBUG:
omapdss DSI: LP_CLK_DIV 6, LP_CLK 7500000
omapdss DISPC: lck = 90000000 (1)
omapdss DISPC: pck = 30000000 (3)
- DSI PLL -
dsi pll source = dss2_alwon_fclk
Fint 2000000 regn 13
CLKIN4DDR 1080000000 regm 270
dsi1_pll_fck 90000000 regm3 12 (on)
dsi2_pll_fck 90000000 regm4 12 (on)
- DSI -
dsi fclk source = dsi2_pll_fclk
DSI_FCLK 90000000
DDR_CLK 270000000
TxByteClkHS 67500000
LP_CLK 7500000
VP_CLK 90000000
VP_PCLK 30000000
As far as I can tell these values fill all the requirements set in the
TRM for clock rates and their ratios.
After the fail in dsi_complexio_init I dump all registers:
DSI_REVISION 00000010
DSI_SYSCONFIG 00000011
DSI_SYSSTATUS 00000001
DSI_IRQSTATUS 00080080
DSI_IRQENABLE 00000000
DSI_CTRL 00000100
DSI_COMPLEXIO_CFG1 48200321
DSI_COMPLEXIO_IRQ_STATUS 00000000
DSI_COMPLEXIO_IRQ_ENABLE 00000000
DSI_CLK_CTRL a0304006
DSI_TIMING1 7fff7fff
DSI_TIMING2 7fff7fff
DSI_VM_TIMING1 00000000
DSI_VM_TIMING2 00000000
DSI_VM_TIMING3 00000000
DSI_CLK_TIMING 00000101
DSI_TX_FIFO_VC_SIZE 00000000
DSI_RX_FIFO_VC_SIZE 00000000
DSI_COMPLEXIO_CFG2 00000000
DSI_RX_FIFO_VC_FULLNESS 00000000
DSI_VM_TIMING4 00000000
DSI_TX_FIFO_VC_EMPTINESS 00000000
DSI_VM_TIMING5 00000000
DSI_VM_TIMING6 00000000
DSI_VM_TIMING7 00000000
DSI_STOPCLK_TIMING 00000080
DSI_VC_CTRL(0) 00000000
DSI_VC_TE(0) 00000000
DSI_VC_LONG_PACKET_HEADER(0) 00000000
DSI_VC_LONG_PACKET_PAYLOAD(0) 00000000
DSI_VC_SHORT_PACKET_HEADER(0) 00000000
DSI_VC_IRQSTATUS(0) 00000000
DSI_VC_IRQENABLE(0) 00000000
DSI_VC_CTRL(1) 00000000
DSI_VC_TE(1) 00000000
DSI_VC_LONG_PACKET_HEADER(1) 00000000
DSI_VC_LONG_PACKET_PAYLOAD(1) 00000000
DSI_VC_SHORT_PACKET_HEADER(1) 00000000
DSI_VC_IRQSTATUS(1) 00000000
DSI_VC_IRQENABLE(1) 00000000
DSI_VC_CTRL(2) 00000000
DSI_VC_TE(2) 00000000
DSI_VC_LONG_PACKET_HEADER(2) 00000000
DSI_VC_LONG_PACKET_PAYLOAD(2) 00000000
DSI_VC_SHORT_PACKET_HEADER(2) 00000000
DSI_VC_IRQSTATUS(2) 00000000
DSI_VC_IRQENABLE(2) 00000000
DSI_VC_CTRL(3) 00000000
DSI_VC_TE(3) 00000000
DSI_VC_LONG_PACKET_HEADER(3) 00000000
DSI_VC_LONG_PACKET_PAYLOAD(3) 00000000
DSI_VC_SHORT_PACKET_HEADER(3) 00000000
DSI_VC_IRQSTATUS(3) 00000000
DSI_VC_IRQENABLE(3) 00000000
DSI_DSIPHY_CFG0 1e481d3a
DSI_DSIPHY_CFG1 420a1a6a
DSI_DSIPHY_CFG2 b800001a
DSI_DSIPHY_CFG5 60000000
DSI_PLL_CONTROL 00000000
DSI_PLL_STATUS 00000383
DSI_PLL_GO 00000000
DSI_PLL_CONFIGURATION1 05d90e19
DSI_PLL_CONFIGURATION2 0005600e
Of special interest is the DSI_COMPLEXIO_CFG1. RESET_DONE is not set,
not does the PWR_STATUS match the command given. The
LDO_POWER_GOOD_STATE is asserted however.
The DSI is powered and all the clocks seem to be on and the DSI PLL
locks. Just the complex IO will not power on. I am using a 2.6.32.9
kernel so it is not the latest but I wanted to ask if someone had any
idea where to look next before porting the latest onto our board.
Thanks,
- Juha
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it holds the universe together.
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