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Commit ebae7dfa authored by Zhiwu Song's avatar Zhiwu Song Committed by Wolfram Sang
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i2c: sirf: we need to wait I2C_RESET status in resume 



this fixes the issue that we lost to wait the i2c reset finished.

Signed-off-by: default avatarZhiwu Song <Zhiwu.Song@csr.com>
Signed-off-by: default avatarBarry Song <Baohua.Song@csr.com>
Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
parent c984319a

drivers/i2c/busses/i2c-sirf.c

+2 −0
Original line number Diff line number Diff line
@@ -422,6 +422,8 @@ static int i2c_sirfsoc_resume(struct device *dev) 


	clk_enable(siic->clk);

	writel(SIRFSOC_I2C_RESET, siic->base + SIRFSOC_I2C_CTRL);

	while (readl(siic->base + SIRFSOC_I2C_CTRL) & SIRFSOC_I2C_RESET)

		cpu_relax();

	writel(SIRFSOC_I2C_CORE_EN | SIRFSOC_I2C_MASTER_MODE,

		siic->base + SIRFSOC_I2C_CTRL);

	writel(siic->clk_div, siic->base + SIRFSOC_I2C_CLK_CTRL);