From 396f7f915fc8d69b06005b44d9c39ad9d9649708 Mon Sep 17 00:00:00 2001
From: Davide Cardillo <davide.cardillo@seco.com>
Date: Sun, 31 Oct 2021 16:54:15 +0100
Subject: [PATCH] [i.MX6][drivers/bus/imx-weim.c] Add WCR property of WEIM BUS
The original driver does not manage WCR, one of the parameter of the WEIM bus.
Now the WCR can be set via device-tree.
---
drivers/bus/imx-weim.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/bus/imx-weim.c b/drivers/bus/imx-weim.c
index 28bb65a5613fd..1662983943de3 100644
--- a/drivers/bus/imx-weim.c
+++ b/drivers/bus/imx-weim.c
@@ -15,6 +15,8 @@
#include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
#include <linux/regmap.h>
+#define WCR_REG_OFFSET 0x90
+
struct imx_weim_devtype {
unsigned int cs_count;
unsigned int cs_regs_count;
@@ -131,7 +133,7 @@ static int weim_timing_setup(struct device *dev,
const struct imx_weim_devtype *devtype,
struct cs_timing_state *ts)
{
- u32 cs_idx, value[MAX_CS_REGS_COUNT];
+ u32 cs_idx, value[MAX_CS_REGS_COUNT], wcr;
int i, ret;
int reg_idx, num_regs;
struct cs_timing *cst;
@@ -184,6 +186,12 @@ static int weim_timing_setup(struct device *dev,
}
}
+ ret = of_property_read_u32 (np, "fsl,weim-wcr", &wcr);
+ if ( ret )
+ return ret;
+
+ writel(wcr, base + WCR_REG_OFFSET);
+
return 0;
}
--
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