From: prakash.pm@ti.com (Manjunathappa, Prakash)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 3/5] ARM: davinci: da850: do not specify clock_frequency for UART DT node
Date: Wed, 19 Jun 2013 14:45:40 +0530 [thread overview]
Message-ID: <1371633342-1210-4-git-send-email-prakash.pm@ti.com> (raw)
In-Reply-To: <1371633342-1210-1-git-send-email-prakash.pm@ti.com>
DT kernel on da850-evm comes up with garbled UART logs. This is because
of mismatch in actual module clock rate and rate specified(clock-frequency)
in DT blob. kernel should not assume or depend on bootloaders clock
configuration, instead let it find the clock rate at runtime.
Issue discussed here before arriving on this implementation:
"ARM: davinci: da850 evm: update clock rate for UART 1/2 DT nodes"
https://patchwork.kernel.org/patch/2162271/
Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com>
---
arch/arm/boot/dts/da850.dtsi | 3 ---
1 files changed, 0 insertions(+), 3 deletions(-)
diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
index 2c88313..4d43046 100644
--- a/arch/arm/boot/dts/da850.dtsi
+++ b/arch/arm/boot/dts/da850.dtsi
@@ -129,7 +129,6 @@
serial0: serial at 1c42000 {
compatible = "ns16550a";
reg = <0x42000 0x100>;
- clock-frequency = <150000000>;
reg-shift = <2>;
interrupts = <25>;
status = "disabled";
@@ -137,7 +136,6 @@
serial1: serial at 1d0c000 {
compatible = "ns16550a";
reg = <0x10c000 0x100>;
- clock-frequency = <150000000>;
reg-shift = <2>;
interrupts = <53>;
status = "disabled";
@@ -145,7 +143,6 @@
serial2: serial at 1d0d000 {
compatible = "ns16550a";
reg = <0x10d000 0x100>;
- clock-frequency = <150000000>;
reg-shift = <2>;
interrupts = <61>;
status = "disabled";
--
1.7.4.1
next prev parent reply other threads:[~2013-06-19 9:15 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-19 9:15 [PATCH v3 0/5] ARM: davinci: fix UART clock enabling Manjunathappa, Prakash
2013-06-19 9:15 ` [PATCH v3 1/5] ARM: davinci: uart: move to devid based clk_get Manjunathappa, Prakash
2013-07-19 13:06 ` Sekhar Nori
2013-06-19 9:15 ` [PATCH v3 2/5] ARM: davinci: da850: override device name of UART in DT kernel Manjunathappa, Prakash
2013-07-19 14:50 ` Sekhar Nori
2013-06-19 9:15 ` Manjunathappa, Prakash [this message]
2013-07-22 10:03 ` [PATCH v3 3/5] ARM: davinci: da850: do not specify clock_frequency for UART DT node Sekhar Nori
2013-06-19 9:15 ` [PATCH v3 4/5] ARM: davinci: da8xx: remove da8xx_uart_clk_enable Manjunathappa, Prakash
2013-07-22 10:03 ` Sekhar Nori
2013-06-19 9:15 ` [PATCH v3 5/5] ARM: davinci: serial: platform code cleanup Manjunathappa, Prakash
2013-07-22 10:11 ` Sekhar Nori
2013-08-14 11:27 ` Sekhar Nori
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=1371633342-1210-4-git-send-email-prakash.pm@ti.com \
--to=prakash.pm@ti.com \
--cc=linux-arm-kernel@lists.infradead.org \
/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;
as well as URLs for NNTP newsgroup(s).