OpenWrt – Blame information for rev 4
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Rev | Author | Line No. | Line |
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1 | office | 1 | From 3dd05bc8d1ec3c98de90e922bb6ed6a27d3a7eaf Mon Sep 17 00:00:00 2001 |
2 | From: Dave Stevenson <dave.stevenson@raspberrypi.org> |
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3 | Date: Thu, 7 Sep 2017 15:54:40 +0100 |
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4 | Subject: [PATCH 325/454] media: tc358743: Increase FIFO level to 374. |
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5 | |||
6 | The existing fixed value of 16 worked for UYVY 720P60 over |
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7 | 2 lanes at 594MHz, or UYVY 1080P60 over 4 lanes. (RGB888 |
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8 | 1080P60 needs 6 lanes at 594MHz). |
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9 | It doesn't allow for lower resolutions to work as the FIFO |
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10 | underflows. |
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11 | |||
12 | 374 is required for 1080P24-30 UYVY over 2 lanes @ 972Mbit/s, but |
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13 | >374 means that the FIFO underflows on 1080P50 UYVY over 2 lanes |
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14 | @ 972Mbit/s. |
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15 | |||
16 | Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org> |
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17 | --- |
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18 | drivers/media/i2c/tc358743.c | 2 +- |
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19 | 1 file changed, 1 insertion(+), 1 deletion(-) |
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20 | |||
21 | --- a/drivers/media/i2c/tc358743.c |
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22 | +++ b/drivers/media/i2c/tc358743.c |
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23 | @@ -1782,7 +1782,7 @@ static int tc358743_probe_of(struct tc35 |
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24 | state->pdata.ddc5v_delay = DDC5V_DELAY_100_MS; |
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25 | state->pdata.enable_hdcp = false; |
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26 | /* A FIFO level of 16 should be enough for 2-lane 720p60 at 594 MHz. */ |
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27 | - state->pdata.fifo_level = 16; |
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28 | + state->pdata.fifo_level = 374; |
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29 | /* |
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30 | * The PLL input clock is obtained by dividing refclk by pll_prd. |
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31 | * It must be between 6 MHz and 40 MHz, lower frequency is better. |