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mmc: arasan: Fix the issue in reading tap values from DT

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'of_property_read_variable_u32_array' function returns number
of elements read on success. This patch updates the condition
check in the driver to overwrite the tap values from DT if exist.

Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
Signed-off-by: Manish Narani <manish.narani@xilinx.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/1623753837-21035-8-git-send-email-manish.narani@xilinx.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Sai Krishna Potthuri 2021-06-15 16:13:57 +05:30 committed by Ulf Hansson
parent 4dd7080a78
commit 5c7e468ab1
1 changed files with 4 additions and 2 deletions
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6
drivers/mmc/host/sdhci-of-arasan.c
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@ -1019,13 +1019,15 @@ static void arasan_dt_read_clk_phase(struct device *dev,
struct device_node *np = dev->of_node;
u32 clk_phase[2] = {0};
int ret;
/*
* Read Tap Delay values from DT, if the DT does not contain the
* Tap Values then use the pre-defined values.
*/
if (of_property_read_variable_u32_array(np, prop, &clk_phase[0],
2, 0)) {
ret = of_property_read_variable_u32_array(np, prop, &clk_phase[0],
2, 0);
if (ret < 0) {
dev_dbg(dev, "Using predefined clock phase for %s = %d %d\n",
prop, clk_data->clk_phase_in[timing],
clk_data->clk_phase_out[timing]);