github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-05 04:56:13 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

phy: cdns-dphy: Store hs_clk_rate and return it

Browse Source 
The DPHY driver does not return the actual hs_clk_rate, so the DSI
driver has no idea what clock was actually achieved. Set the realized
hs_clk_rate to the opts struct, so that the DSI driver gets it back.

Reviewed-by: Aradhya Bhatia <aradhya.bhatia@linux.dev>
Tested-by: Parth Pancholi <parth.pancholi@toradex.com>
Tested-by: Jayesh Choudhary <j-choudhary@ti.com>
Acked-by: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Devarsh Thakkar <devarsht@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://lore.kernel.org/r/20250723-cdns-dphy-hs-clk-rate-fix-v1-1-d4539d44cbe7@ideasonboard.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Tomi Valkeinen 2025-07-23 13:01:28 +03:00 committed by Vinod Koul
parent 78a474b5a3
commit 689a54acb5
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/phy/cadence/cdns-dphy.c
View File

@ -79,6 +79,7 @@ struct cdns_dphy_cfg {
u8 pll_ipdiv;
u8 pll_opdiv;
u16 pll_fbdiv;
u32 hs_clk_rate;
unsigned int nlanes;
};
@ -154,6 +155,9 @@ static int cdns_dsi_get_dphy_pll_cfg(struct cdns_dphy *dphy,
cfg->pll_ipdiv,
pll_ref_hz);
cfg->hs_clk_rate = div_u64((u64)pll_ref_hz * cfg->pll_fbdiv,
2 * cfg->pll_opdiv * cfg->pll_ipdiv);
return 0;
}
@ -297,6 +301,7 @@ static int cdns_dphy_config_from_opts(struct phy *phy,
if (ret)
return ret;
opts->hs_clk_rate = cfg->hs_clk_rate;
opts->wakeup = cdns_dphy_get_wakeup_time_ns(dphy) / 1000;
return 0;