public inbox for u-boot@lists.denx.de
 help / color / mirror / Atom feed
From: Mike Looijmans <mike.looijmans@topic.nl>
To: u-boot@lists.denx.de
Subject: [PATCH] board: xilinx/zynqmp: Remove 1-second delay at boot
Date: Tue, 26 May 2020 10:20:26 +0200	[thread overview]
Message-ID: <20200526082026.18898-1-mike.looijmans@topic.nl> (raw)

SPL boot is slow on the ZynqMP because of this delay. The initialization done
in psu_init no longer requires an external delay, so this can be removed to
speed up the SPL boot flow considerably.

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
---
 board/xilinx/zynqmp/zynqmp.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c
index cb72914adb..d00235f236 100644
--- a/board/xilinx/zynqmp/zynqmp.c
+++ b/board/xilinx/zynqmp/zynqmp.c
@@ -32,7 +32,6 @@
 #include <zynqmp_firmware.h>
 #include <g_dnl.h>
 #include <linux/bitops.h>
-#include <linux/delay.h>
 #include <linux/sizes.h>
 #include "../common/board.h"
 
@@ -334,9 +333,6 @@ int board_early_init_f(void)
 	ret = psu_init();
 	if (ret)
 		return ret;
-
-	/* Delay is required for clocks to be propagated */
-	udelay(1000000);
 #endif
 
 #ifdef CONFIG_DEBUG_UART
-- 
2.17.1

             reply	other threads:[~2020-05-26  8:20 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-26  8:20 Mike Looijmans [this message]
2020-05-29 11:34 ` [PATCH] board: xilinx/zynqmp: Remove 1-second delay at boot Michal Simek

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200526082026.18898-1-mike.looijmans@topic.nl \
    --to=mike.looijmans@topic.nl \
    --cc=u-boot@lists.denx.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox