From patchwork Sat Feb 22 13:05:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dario Binacchi X-Patchwork-Id: 236728 List-Id: U-Boot discussion From: dariobin at libero.it (Dario Binacchi) Date: Sat, 22 Feb 2020 14:05:43 +0100 Subject: [PATCH v3 07/13] video: omap: add loop exit conditions to the dpll setup In-Reply-To: <20200222130549.25565-1-dariobin@libero.it> References: <20200222130549.25565-1-dariobin@libero.it> Message-ID: <20200222130549.25565-8-dariobin@libero.it> In case of null error, round rate is equal to target rate, so it is useless to continue to search the DPLL setup parameters to get the desidered pixel clock rate. Signed-off-by: Dario Binacchi Reviewed-by: Lokesh Vutla --- Changes in v3: None Changes in v2: None drivers/video/am335x-fb.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/video/am335x-fb.c b/drivers/video/am335x-fb.c index bbe965af84..684223f275 100644 --- a/drivers/video/am335x-fb.c +++ b/drivers/video/am335x-fb.c @@ -160,7 +160,7 @@ int am335xfb_init(struct am335x_lcdpanel *panel) err = panel->pxl_clk; err_r = err; - for (d = 2; d < 255; d++) { + for (d = 2; err_r && d < 255; d++) { for (m = 2; m < 2047; m++) { if ((V_OSCK * m) < (panel->pxl_clk * d)) continue; @@ -176,6 +176,8 @@ int am335xfb_init(struct am335x_lcdpanel *panel) dpll_disp.m = m; dpll_disp.n = n; best_d = d; + if (err_r == 0) + break; } } }