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drm/bridge: tc358767: fix initial DP0/1_SRCCTRL value
Initially DP0_SRCCTRL is set to a static value which includes DP0_SRCCTRL_LANES_2 and DP0_SRCCTRL_BW27, even when only 1 lane of 1.62Gbps speed is used. DP1_SRCCTRL is configured to a magic number. This patch changes the configuration as follows: Configure DP0_SRCCTRL by using tc_srcctrl() which provides the correct value. DP1_SRCCTRL needs two bits to be set to the same value as DP0_SRCCTRL: SSCG and BW27. All other bits can be zero. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Reviewed-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190103115954.12785-5-tomi.valkeinen@ti.com
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1 changed files with 5 additions and 6 deletions
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@ -836,12 +836,11 @@ static int tc_main_link_setup(struct tc_data *tc)
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if (!tc->mode)
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if (!tc->mode)
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return -EINVAL;
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return -EINVAL;
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/* from excel file - DP0_SrcCtrl */
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tc_write(DP0_SRCCTRL, tc_srcctrl(tc));
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tc_write(DP0_SRCCTRL, DP0_SRCCTRL_SCRMBLDIS | DP0_SRCCTRL_EN810B |
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/* SSCG and BW27 on DP1 must be set to the same as on DP0 */
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DP0_SRCCTRL_LANESKEW | DP0_SRCCTRL_LANES_2 |
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tc_write(DP1_SRCCTRL,
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DP0_SRCCTRL_BW27 | DP0_SRCCTRL_AUTOCORRECT);
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(tc->link.spread ? DP0_SRCCTRL_SSCG : 0) |
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/* from excel file - DP1_SrcCtrl */
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((tc->link.base.rate != 162000) ? DP0_SRCCTRL_BW27 : 0));
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tc_write(DP1_SRCCTRL, 0x00003083);
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rate = clk_get_rate(tc->refclk);
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rate = clk_get_rate(tc->refclk);
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switch (rate) {
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switch (rate) {
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