Commit 53e3d528 authored by Piyush Malgujar's avatar Piyush Malgujar Committed by Andi Shyti
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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: default avatarPiyush Malgujar <pmalgujar@marvell.com>
Acked-by: default avatarAndi Shyti <andi.shyti@kernel.org>
Signed-off-by: default avatarAndi Shyti <andi.shyti@kernel.org>
parent b9960b90

drivers/i2c/busses/i2c-thunderx-pcidrv.c

+3 −2
Original line number Diff line number Diff line
@@ -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);

	}



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