From: Jorge Ramirez-Ortiz <jorge.ramirez-or...@linaro.org>
Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-or...@linaro.org>
---
drivers/spmi/spmi-msm.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/spmi/spmi-msm.c b/drivers/spmi/spmi-msm.c
index c226913..e9bfbb0 100644
--- a/drivers/spmi/spmi-msm.c
+++ b/drivers/spmi/spmi-msm.c
@@ -17,6 +17,11 @@
DECLARE_GLOBAL_DATA_PTR;
+
+/* PMIC Arbiter configuration registers */
+#define PMIC_ARB_VERSION 0x0000
+#define PMIC_ARB_VERSION_V2_MIN 0x20010000
+
#define ARB_CHANNEL_OFFSET(n) (0x4 * (n))
#define SPMI_CH_OFFSET(chnl) ((chnl) * 0x8000)
@@ -148,6 +153,8 @@ static int msm_spmi_probe(struct udevice *dev)
struct udevice *parent = dev->parent;
struct msm_spmi_priv *priv = dev_get_priv(dev);
int node = dev_of_offset(dev);
+ u32 hw_ver;
+ bool is_v1;
int i;
priv->arb_chnl = devfdt_get_addr(dev);
@@ -155,6 +162,12 @@ static int msm_spmi_probe(struct udevice *dev)
dev_of_offset(parent), node, "reg", 1, NULL, false);
priv->spmi_obs = fdtdec_get_addr_size_auto_parent(gd->fdt_blob,
dev_of_offset(parent), node, "reg", 2, NULL, false);
+
+ hw_ver = readl(priv->arb_chnl + PMIC_ARB_VERSION - 0x800);
+ is_v1 = (hw_ver < PMIC_ARB_VERSION_V2_MIN);
+
+ dev_dbg(dev, "PMIC Arb Version-%d (0x%x)\n", (is_v1 ? 1 : 2), hw_ver);
+
if (priv->arb_chnl == FDT_ADDR_T_NONE ||
priv->spmi_core == FDT_ADDR_T_NONE ||
priv->spmi_obs == FDT_ADDR_T_NONE)
--
2.7.4
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