From: Piyush Malgujar <pmalgujar@marvell.com>
To: <andi.shyti@kernel.org>, <linux-i2c@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Cc: <sgarapati@marvell.com>, <cchavva@marvell.com>,
<jannadurai@marvell.com>, Piyush Malgujar <pmalgujar@marvell.com>
Subject: [PATCH v6 4/4] i2c: thunderx: Adding ioclk support
Date: Tue, 2 Apr 2024 06:40:14 -0700 [thread overview]
Message-ID: <20240402134018.2686919-5-pmalgujar@marvell.com> (raw)
In-Reply-To: <20240402134018.2686919-1-pmalgujar@marvell.com>
Read the ioclk property as reference clock if sclk not present in acpi
table to make it SOC agnostic.
In case, it's not populated from dts/acpi table, use the default clock
of 800 MHz which is optimal in either case of sclk/ioclk.
Signed-off-by: Piyush Malgujar <pmalgujar@marvell.com>
---
drivers/i2c/busses/i2c-thunderx-pcidrv.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/i2c/busses/i2c-thunderx-pcidrv.c b/drivers/i2c/busses/i2c-thunderx-pcidrv.c
index 31f11b77ab663626967c86086a03213876bf4a07..32d0e3930b675484138084e1bbed2e7cf898e1e1 100644
--- a/drivers/i2c/busses/i2c-thunderx-pcidrv.c
+++ b/drivers/i2c/busses/i2c-thunderx-pcidrv.c
@@ -27,7 +27,7 @@
#define PCI_DEVICE_ID_THUNDER_TWSI 0xa012
-#define SYS_FREQ_DEFAULT 700000000
+#define SYS_FREQ_DEFAULT 800000000
#define OTX2_REF_FREQ_DEFAULT 100000000
#define TWSI_INT_ENA_W1C 0x1028
@@ -100,7 +100,8 @@ static void thunder_i2c_clock_enable(struct device *dev, struct octeon_i2c *i2c)
i2c->sys_freq = clk_get_rate(i2c->clk);
} else {
/* ACPI */
- device_property_read_u32(dev, "sclk", &i2c->sys_freq);
+ if (device_property_read_u32(dev, "sclk", &i2c->sys_freq))
+ device_property_read_u32(dev, "ioclk", &i2c->sys_freq);
}
skip:
--
2.43.0
next prev parent reply other threads:[~2024-04-02 13:40 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-02 13:40 [PATCH v6 0/4] i2c: thunderx: Marvell thunderx i2c changes Piyush Malgujar
2024-04-02 13:40 ` [PATCH v6 1/4] i2c: thunderx: Clock divisor logic changes Piyush Malgujar
2024-04-16 13:08 ` Piyush Malgujar
2024-04-18 19:07 ` Andi Shyti
2024-04-02 13:40 ` [PATCH v6 2/4] i2c: thunderx: Support for High speed mode Piyush Malgujar
2024-04-18 19:12 ` Andi Shyti
2024-04-02 13:40 ` [PATCH v6 3/4] i2c: octeon: Handle watchdog timeout Piyush Malgujar
2024-04-02 13:40 ` Piyush Malgujar [this message]
2024-04-18 19:14 ` [PATCH v6 4/4] i2c: thunderx: Adding ioclk support Andi Shyti
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=20240402134018.2686919-5-pmalgujar@marvell.com \
--to=pmalgujar@marvell.com \
--cc=andi.shyti@kernel.org \
--cc=cchavva@marvell.com \
--cc=jannadurai@marvell.com \
--cc=linux-i2c@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=sgarapati@marvell.com \
/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 read-only IMAP folder(s) and NNTP newsgroup(s).