From: Sourav Poddar <sourav.poddar@ti.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [UBOOT][PATCHv6 2/6] armv7: hw_data: change clock divider setting.
Date: Mon, 7 Oct 2013 15:53:00 +0530 [thread overview]
Message-ID: <1381141384-32706-3-git-send-email-sourav.poddar@ti.com> (raw)
In-Reply-To: <1381141384-32706-1-git-send-email-sourav.poddar@ti.com>
Clock requirement for qspi clk is 192 Mhz.
According to the below formulae,
f dpll = f ref * 2 * m /(n + 1)
clockoutx2_Hmn = f dpll / (hmn+ 1)
fref = 20 Mhz, m = 96, n = 4 gives f dpll = 768 Mhz
For clockoutx2_Hmn to be 768, hmn + 1 should be 4.
Signed-off-by: Sourav Poddar <sourav.poddar@ti.com>
---
arch/arm/cpu/armv7/omap5/hw_data.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/arm/cpu/armv7/omap5/hw_data.c b/arch/arm/cpu/armv7/omap5/hw_data.c
index c00bfb8..a1b249e 100644
--- a/arch/arm/cpu/armv7/omap5/hw_data.c
+++ b/arch/arm/cpu/armv7/omap5/hw_data.c
@@ -170,7 +170,7 @@ static const struct dpll_params per_dpll_params_768mhz_es2[NUM_SYS_CLKS] = {
static const struct dpll_params per_dpll_params_768mhz_dra7xx[NUM_SYS_CLKS] = {
{32, 0, 4, 1, 3, 4, 10, 2, -1, -1, -1, -1}, /* 12 MHz */
- {96, 4, 4, 1, 3, 4, 10, 2, -1, -1, -1, -1}, /* 20 MHz */
+ {96, 4, 4, 1, 3, 4, 4, 2, -1, -1, -1, -1}, /* 20 MHz */
{160, 6, 4, 1, 3, 4, 10, 2, -1, -1, -1, -1}, /* 16.8 MHz */
{20, 0, 4, 1, 3, 4, 10, 2, -1, -1, -1, -1}, /* 19.2 MHz */
{192, 12, 4, 1, 3, 4, 10, 2, -1, -1, -1, -1}, /* 26 MHz */
--
1.7.1
next prev parent reply other threads:[~2013-10-07 10:23 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-07 10:22 [U-Boot] [UBOOT][PATCHv6 0/6] Add TI qspi controller with memory mapped support Sourav Poddar
2013-10-07 10:22 ` [U-Boot] [UBOOT][PATCHv6 1/6] omap5: add qspi support Sourav Poddar
2013-10-07 10:23 ` Sourav Poddar [this message]
2013-10-07 10:23 ` [U-Boot] [UBOOT][PATCHv6 3/6] sf: Add memory mapped read support Sourav Poddar
2013-10-07 10:23 ` [U-Boot] [UBOOT][PATCHv6 4/6] spi: add TI QSPI driver Sourav Poddar
2013-10-07 10:23 ` [U-Boot] [UBOOT][PATCHv6 5/6] dra7xx_evm: add SPL API, QSPI, and serial flash support Sourav Poddar
2013-10-07 10:23 ` [U-Boot] [UBOOT][PATCHv6 6/6] README: qspi usecase and testing documentation Sourav Poddar
2013-10-07 14:31 ` [U-Boot] [UBOOT][PATCHv6 0/6] Add TI qspi controller with memory mapped support Jagan Teki
2013-10-07 15:17 ` Sourav Poddar
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=1381141384-32706-3-git-send-email-sourav.poddar@ti.com \
--to=sourav.poddar@ti.com \
--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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.