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i2c: mediatek: add support for optional arb and pmic clock

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Add support for optional arb and pmic clock for i2c provided in upstream
linux DTSI.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
This commit is contained in:
Christian Marangi 2024-06-24 23:03:31 +02:00 • committed by Tom Rini
parent 1223e5bb17
commit 72d01e4345
1 changed files with 30 additions and 0 deletions
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30
drivers/i2c/mtk_i2c.c
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@ -221,6 +221,8 @@ struct mtk_i2c_priv {
void __iomem *pdmabase; /* dma base address*/
struct clk clk_main; /* main clock for i2c bus */
struct clk clk_dma; /* DMA clock for i2c via DMA */
struct clk clk_arb; /* DMA clock for i2c ARB */
struct clk clk_pmic; /* DMA clock for i2c PMIC */
const struct mtk_i2c_soc_data *soc_data; /* Compatible data for different IC */
int op; /* operation mode */
bool zero_len; /* Only transfer slave address, no data */
@ -255,6 +257,18 @@ static int mtk_i2c_clk_enable(struct mtk_i2c_priv *priv)
if (ret)
return log_msg_ret("enable clk_dma", ret);
if (priv->clk_arb.dev) {
ret = clk_enable(&priv->clk_arb);
if (ret)
return log_msg_ret("enable clk_arb", ret);
}
if (priv->clk_pmic.dev) {
ret = clk_enable(&priv->clk_pmic);
if (ret)
return log_msg_ret("enable clk_pmic", ret);
}
return 0;
}
@ -262,6 +276,18 @@ static int mtk_i2c_clk_disable(struct mtk_i2c_priv *priv)
{
int ret;
if (priv->clk_pmic.dev) {
ret = clk_disable(&priv->clk_pmic);
if (ret)
return log_msg_ret("disable clk_pmic", ret);
}
if (priv->clk_arb.dev) {
ret = clk_disable(&priv->clk_arb);
if (ret)
return log_msg_ret("disable clk_arb", ret);
}
ret = clk_disable(&priv->clk_dma);
if (ret)
return log_msg_ret("disable clk_dma", ret);
@ -748,6 +774,10 @@ static int mtk_i2c_of_to_plat(struct udevice *dev)
ret = clk_get_by_index(dev, 1, &priv->clk_dma);
/* optional i2c clock */
clk_get_by_name(dev, "arb", &priv->clk_arb);
clk_get_by_name(dev, "pmic", &priv->clk_pmic);
return ret;
}