summaryrefslogtreecommitdiff
path: root/drivers/i2c
diff options
context:
space:
mode:
authorPiyush Malgujar <pmalgujar@marvell.com>2024-04-23 10:46:08 +0300
committerAndi Shyti <andi.shyti@kernel.org>2024-05-06 01:56:41 +0300
commit53e3d528ba723c8fd5bf968f517c9bc6a369f3ea (patch)
tree00a1e2dcb54a04a065ec70d6131d021bd6df9c91 /drivers/i2c
parentb9960b902f42c80ef436bf172666f20acbda32ac (diff)
downloadlinux-53e3d528ba723c8fd5bf968f517c9bc6a369f3ea.tar.xz
i2c: thunderx: Adding ioclk support
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>
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/busses/i2c-thunderx-pcidrv.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/i2c/busses/i2c-thunderx-pcidrv.c b/drivers/i2c/busses/i2c-thunderx-pcidrv.c
index 31f11b77ab66..32d0e3930b67 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: