[PATCH v4 4/5] spmi: msm: fix register range names
Caleb Connolly
caleb.connolly at linaro.org
Tue Nov 28 17:30:28 CET 2023
The core and chnl register ranges were swapped on SDM845. Fix it, and
fetch the register ranges by name instead of by index.
Drop the cosmetic "version" variable and clean up the debug logging.
Signed-off-by: Caleb Connolly <caleb.connolly at linaro.org>
---
arch/arm/dts/qcs404-evb.dts | 7 +++--
arch/arm/dts/sdm845.dtsi | 2 +-
doc/device-tree-bindings/spmi/spmi-msm.txt | 26 -----------------
drivers/spmi/spmi-msm.c | 46 ++++++++++++------------------
4 files changed, 23 insertions(+), 58 deletions(-)
diff --git a/arch/arm/dts/qcs404-evb.dts b/arch/arm/dts/qcs404-evb.dts
index 3bb580ba4e17..cf41e5a33dbe 100644
--- a/arch/arm/dts/qcs404-evb.dts
+++ b/arch/arm/dts/qcs404-evb.dts
@@ -362,9 +362,10 @@
spmi at 200f000 {
compatible = "qcom,spmi-pmic-arb";
- reg = <0x200f000 0x1000
- 0x2400000 0x400000
- 0x2c00000 0x400000>;
+ reg = <0x200f000 0x001000>,
+ <0x2400000 0x800000>,
+ <0x2c00000 0x800000>;
+ reg-names = "core", "chnls", "obsrvr";
#address-cells = <0x1>;
#size-cells = <0x1>;
diff --git a/arch/arm/dts/sdm845.dtsi b/arch/arm/dts/sdm845.dtsi
index a26e9f411ee0..96c9749a52c0 100644
--- a/arch/arm/dts/sdm845.dtsi
+++ b/arch/arm/dts/sdm845.dtsi
@@ -63,7 +63,7 @@
reg = <0xc440000 0x1100>,
<0xc600000 0x2000000>,
<0xe600000 0x100000>;
- reg-names = "cnfg", "core", "obsrvr";
+ reg-names = "core", "chnls", "obsrvr";
#address-cells = <0x1>;
#size-cells = <0x1>;
diff --git a/doc/device-tree-bindings/spmi/spmi-msm.txt b/doc/device-tree-bindings/spmi/spmi-msm.txt
deleted file mode 100644
index ae47673b768b..000000000000
--- a/doc/device-tree-bindings/spmi/spmi-msm.txt
+++ /dev/null
@@ -1,26 +0,0 @@
-Qualcomm SPMI arbiter/bus driver
-
-This is bus driver for Qualcomm chips that use SPMI to communicate with PMICs.
-
-Required properties:
-- compatible: "qcom,spmi-pmic-arb"
-- reg: Register block adresses and sizes for various parts of device:
- 1) PMIC arbiter channel mapping base (PMIC_ARB_REG_CHNLn)
- 2) SPMI write command (master) registers (PMIC_ARB_CORE_SW_DEC_CHANNELS)
- 3) SPMI read command (observer) registers (PMIC_ARB_CORE_REGISTERS_OBS)
-
-Optional properties (if not set by parent):
-- #address-cells: 0x1 - childs slave ID address
-- #size-cells: 0x1
-
-All PMICs should be placed as a child nodes of bus arbiter.
-Automatic detection of childs is currently not supported.
-
-Example:
-
-spmi at 200f000 {
- compatible = "qcom,spmi-pmic-arb";
- reg = <0x200f800 0x200 0x2400000 0x400000 0x2c00000 0x400000>;
- #address-cells = <0x1>;
- #size-cells = <0x1>;
-};
diff --git a/drivers/spmi/spmi-msm.c b/drivers/spmi/spmi-msm.c
index 27a035c0a595..5fe8a70abca7 100644
--- a/drivers/spmi/spmi-msm.c
+++ b/drivers/spmi/spmi-msm.c
@@ -70,7 +70,7 @@ enum pmic_arb_channel {
struct msm_spmi_priv {
phys_addr_t arb_chnl; /* ARB channel mapping base */
- phys_addr_t spmi_core; /* SPMI core */
+ phys_addr_t spmi_chnls; /* SPMI channels */
phys_addr_t spmi_obs; /* SPMI observer */
/* SPMI channel map */
uint8_t channel_map[SPMI_MAX_SLAVES][SPMI_MAX_PERIPH];
@@ -95,10 +95,10 @@ static int msm_spmi_write(struct udevice *dev, int usid, int pid, int off,
/* Disable IRQ mode for the current channel*/
writel(0x0,
- priv->spmi_core + SPMI_CH_OFFSET(channel) + SPMI_REG_CONFIG);
+ priv->spmi_chnls + SPMI_CH_OFFSET(channel) + SPMI_REG_CONFIG);
/* Write single byte */
- writel(val, priv->spmi_core + SPMI_CH_OFFSET(channel) + SPMI_REG_WDATA);
+ writel(val, priv->spmi_chnls + SPMI_CH_OFFSET(channel) + SPMI_REG_WDATA);
/* Prepare write command */
reg |= SPMI_CMD_EXT_REG_WRITE_LONG << SPMI_CMD_OPCODE_SHIFT;
@@ -113,12 +113,12 @@ static int msm_spmi_write(struct udevice *dev, int usid, int pid, int off,
ch_offset = SPMI_CH_OFFSET(channel);
/* Send write command */
- writel(reg, priv->spmi_core + SPMI_CH_OFFSET(channel) + SPMI_REG_CMD0);
+ writel(reg, priv->spmi_chnls + SPMI_CH_OFFSET(channel) + SPMI_REG_CMD0);
/* Wait till CMD DONE status */
reg = 0;
while (!reg) {
- reg = readl(priv->spmi_core + SPMI_CH_OFFSET(channel) +
+ reg = readl(priv->spmi_chnls + SPMI_CH_OFFSET(channel) +
SPMI_REG_STATUS);
}
@@ -186,47 +186,37 @@ static struct dm_spmi_ops msm_spmi_ops = {
static int msm_spmi_probe(struct udevice *dev)
{
struct msm_spmi_priv *priv = dev_get_priv(dev);
- phys_addr_t config_addr;
+ phys_addr_t core_addr;
u32 hw_ver;
- u32 version;
int i;
- int err;
- config_addr = dev_read_addr_index(dev, 0);
- priv->spmi_core = dev_read_addr_index(dev, 1);
- priv->spmi_obs = dev_read_addr_index(dev, 2);
+ core_addr = dev_read_addr_name(dev, "core");
+ priv->spmi_chnls = dev_read_addr_name(dev, "chnls");
+ priv->spmi_obs = dev_read_addr_name(dev, "obsrvr");
- hw_ver = readl(config_addr + PMIC_ARB_VERSION);
+ hw_ver = readl(core_addr + PMIC_ARB_VERSION);
if (hw_ver < PMIC_ARB_VERSION_V3_MIN) {
priv->arb_ver = V2;
- version = 2;
- priv->arb_chnl = config_addr + APID_MAP_OFFSET_V1_V2_V3;
+ priv->arb_chnl = core_addr + APID_MAP_OFFSET_V1_V2_V3;
} else if (hw_ver < PMIC_ARB_VERSION_V5_MIN) {
priv->arb_ver = V3;
- version = 3;
- priv->arb_chnl = config_addr + APID_MAP_OFFSET_V1_V2_V3;
+ priv->arb_chnl = core_addr + APID_MAP_OFFSET_V1_V2_V3;
} else {
priv->arb_ver = V5;
- version = 5;
- priv->arb_chnl = config_addr + APID_MAP_OFFSET_V5;
-
- if (err) {
- dev_err(dev, "could not read APID->PPID mapping table, rc= %d\n", err);
- return -1;
- }
+ priv->arb_chnl = core_addr + APID_MAP_OFFSET_V5;
}
- dev_dbg(dev, "PMIC Arb Version-%d (0x%x)\n", version, hw_ver);
+ dev_dbg(dev, "PMIC Arb Version-%d (%#x)\n", hw_ver >> 28, hw_ver);
if (priv->arb_chnl == FDT_ADDR_T_NONE ||
- priv->spmi_core == FDT_ADDR_T_NONE ||
+ priv->spmi_chnls == FDT_ADDR_T_NONE ||
priv->spmi_obs == FDT_ADDR_T_NONE)
return -EINVAL;
- dev_dbg(dev, "priv->arb_chnl address (%llu)\n", priv->arb_chnl);
- dev_dbg(dev, "priv->spmi_core address (%llu)\n", priv->spmi_core);
- dev_dbg(dev, "priv->spmi_obs address (%llu)\n", priv->spmi_obs);
+ dev_dbg(dev, "priv->arb_chnl address (%#08llx)\n", priv->arb_chnl);
+ dev_dbg(dev, "priv->spmi_chnls address (%#08llx)\n", priv->spmi_chnls);
+ dev_dbg(dev, "priv->spmi_obs address (%#08llx)\n", priv->spmi_obs);
/* Scan peripherals connected to each SPMI channel */
for (i = 0; i < SPMI_MAX_PERIPH; i++) {
uint32_t periph = readl(priv->arb_chnl + ARB_CHANNEL_OFFSET(i));
--
2.42.1
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