iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

i2c: thunderx: Adding ioclk support

Browse Source 
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>
Acked-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
This commit is contained in:
Piyush Malgujar 2024-04-23 00:46:08 -07:00 committed by Andi Shyti
parent b9960b902f
commit 53e3d528ba
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/i2c/busses/i2c-thunderx-pcidrv.c
View File

@ -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: