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mvebu: turris_omnia: add note about i2c slave disable

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Code that disables the i2c slave is now in the mvtwsi i2c driver.
Platform must enable DM_I2C to use that code. Add a comment in the code
as a reminder for the planned DM_I2C migration of Turris Omnia.

Reviewed-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
This commit is contained in:
Baruch Siach 2018-06-07 12:38:11 +03:00 committed by Heiko Schocher
parent 173ec35191
commit d78ecc7339
1 changed files with 5 additions and 1 deletions
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6
board/CZ.NIC/turris_omnia/turris_omnia.c
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@ -321,7 +321,11 @@ int board_early_init_f(void)
writel(OMNIA_GPP_OUT_ENA_LOW, MVEBU_GPIO0_BASE + 0x04);
writel(OMNIA_GPP_OUT_ENA_MID, MVEBU_GPIO1_BASE + 0x04);
/* Disable I2C debug mode blocking 0x64 I2C address */
/*
* Disable I2C debug mode blocking 0x64 I2C address.
* Note: that would be redundant once Turris Omnia migrates to DM_I2C,
* because the mvtwsi driver includes equivalent code.
*/
i2c_debug_reg = readl(MVEBU_TWSI_BASE + MVTWSI_ARMADA_DEBUG_REG);
i2c_debug_reg &= ~(1<<18);
writel(i2c_debug_reg, MVEBU_TWSI_BASE + MVTWSI_ARMADA_DEBUG_REG);