diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.14/950-0327-tc358743-Add-support-for-972Mbit-s-link-freq.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.14/950-0327-tc358743-Add-support-for-972Mbit-s-link-freq.patch | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.14/950-0327-tc358743-Add-support-for-972Mbit-s-link-freq.patch b/target/linux/brcm2708/patches-4.14/950-0327-tc358743-Add-support-for-972Mbit-s-link-freq.patch new file mode 100644 index 0000000000..c257befd72 --- /dev/null +++ b/target/linux/brcm2708/patches-4.14/950-0327-tc358743-Add-support-for-972Mbit-s-link-freq.patch @@ -0,0 +1,79 @@ +From 78b59478f96887aa293670f6dd494628a3714526 Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.org> +Date: Fri, 8 Sep 2017 15:11:53 +0100 +Subject: [PATCH 327/454] tc358743: Add support for 972Mbit/s link freq. + +Adds register setups for running the CSI lanes at 972Mbit/s, +which allows 1080P50 UYVY down 2 lanes. + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org> +--- + drivers/media/i2c/tc358743.c | 47 +++++++++++++++++++++++++----------- + 1 file changed, 33 insertions(+), 14 deletions(-) + +--- a/drivers/media/i2c/tc358743.c ++++ b/drivers/media/i2c/tc358743.c +@@ -1803,6 +1803,7 @@ static int tc358743_probe_of(struct tc35 + /* + * The CSI bps per lane must be between 62.5 Mbps and 1 Gbps. + * The default is 594 Mbps for 4-lane 1080p60 or 2-lane 720p60. ++ * 972 Mbps allows 1080P50 UYVY over 2-lane. + */ + bps_pr_lane = 2 * endpoint->link_frequencies[0]; + if (bps_pr_lane < 62500000U || bps_pr_lane > 1000000000U) { +@@ -1815,23 +1816,41 @@ static int tc358743_probe_of(struct tc35 + state->pdata.refclk_hz * state->pdata.pll_prd; + + /* +- * FIXME: These timings are from REF_02 for 594 Mbps per lane (297 MHz +- * link frequency). In principle it should be possible to calculate ++ * FIXME: These timings are from REF_02 for 594 or 972 Mbps per lane ++ * (297 MHz or 486 MHz link frequency). ++ * In principle it should be possible to calculate + * them based on link frequency and resolution. + */ +- if (bps_pr_lane != 594000000U) ++ switch (bps_pr_lane) { ++ default: + dev_warn(dev, "untested bps per lane: %u bps\n", bps_pr_lane); +- state->pdata.lineinitcnt = 0xe80; +- state->pdata.lptxtimecnt = 0x003; +- /* tclk-preparecnt: 3, tclk-zerocnt: 20 */ +- state->pdata.tclk_headercnt = 0x1403; +- state->pdata.tclk_trailcnt = 0x00; +- /* ths-preparecnt: 3, ths-zerocnt: 1 */ +- state->pdata.ths_headercnt = 0x0103; +- state->pdata.twakeup = 0x4882; +- state->pdata.tclk_postcnt = 0x008; +- state->pdata.ths_trailcnt = 0x2; +- state->pdata.hstxvregcnt = 0; ++ case 594000000U: ++ state->pdata.lineinitcnt = 0xe80; ++ state->pdata.lptxtimecnt = 0x003; ++ /* tclk-preparecnt: 3, tclk-zerocnt: 20 */ ++ state->pdata.tclk_headercnt = 0x1403; ++ state->pdata.tclk_trailcnt = 0x00; ++ /* ths-preparecnt: 3, ths-zerocnt: 1 */ ++ state->pdata.ths_headercnt = 0x0103; ++ state->pdata.twakeup = 0x4882; ++ state->pdata.tclk_postcnt = 0x008; ++ state->pdata.ths_trailcnt = 0x2; ++ state->pdata.hstxvregcnt = 0; ++ break; ++ case 972000000U: ++ state->pdata.lineinitcnt = 0x1b58; ++ state->pdata.lptxtimecnt = 0x007; ++ /* tclk-preparecnt: 6, tclk-zerocnt: 40 */ ++ state->pdata.tclk_headercnt = 0x2806; ++ state->pdata.tclk_trailcnt = 0x00; ++ /* ths-preparecnt: 6, ths-zerocnt: 8 */ ++ state->pdata.ths_headercnt = 0x0806; ++ state->pdata.twakeup = 0x4268; ++ state->pdata.tclk_postcnt = 0x008; ++ state->pdata.ths_trailcnt = 0x5; ++ state->pdata.hstxvregcnt = 0; ++ break; ++ } + + state->reset_gpio = devm_gpiod_get_optional(dev, "reset", + GPIOD_OUT_LOW); |