From: Tomi Valkeinen tomi.valkeinen@ideasonboard.com
[ Upstream commit 689a54acb56858c85de8c7285db82b8ae6dbf683 ]
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-d4539d44cb... Signed-off-by: Vinod Koul vkoul@kernel.org Stable-dep-of: 2c27aaee934a ("phy: cadence: cdns-dphy: Update calibration wait time for startup state machine") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/phy/cadence/cdns-dphy.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/phy/cadence/cdns-dphy.c b/drivers/phy/cadence/cdns-dphy.c index ed87a3970f834..f79ec4fab4093 100644 --- a/drivers/phy/cadence/cdns-dphy.c +++ b/drivers/phy/cadence/cdns-dphy.c @@ -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;