diff --git a/CHANGELOG-rust.md b/CHANGELOG-rust.md
index bd6a316b..a256bcba 100644
--- a/CHANGELOG-rust.md
+++ b/CHANGELOG-rust.md
@@ -5,6 +5,8 @@ This changelog tracks the Rust `svdtools` project. See
 
 ## [Unreleased]
 
+* `convert`: Add `format_config` option
+
 ## [v0.2.4] 2022-05-15
 
 * Added action to build binaries and release for every version tag and latest commit
diff --git a/Cargo.toml b/Cargo.toml
index 799f2f46..3e26f1b2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -27,9 +27,9 @@ edition = "2021"
 clap = { version = "3.0", features = ["derive"] }
 serde = { version = "1.0", features = ["derive"] }
 quick-xml = { version = "0.18", features = ["serialize"] }
-svd-rs = { version = "0.13.2", features = ["serde", "derive-from"]  }
-svd-parser = { version = "0.13.4", features = ["expand"] }
-svd-encoder = "0.13.1"
+svd-rs = { version = "0.14.0", features = ["serde", "derive-from"] }
+svd-parser = { version = "0.14.0", features = ["expand"] }
+svd-encoder = "0.14.0"
 yaml-rust = "0.4"
 serde_yaml = "0.8.23"
 serde_json = { version = "1.0", features = ["preserve_order"] }
diff --git a/src/cli.rs b/src/cli.rs
index f8019c63..6083df6c 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -71,6 +71,14 @@ enum Command {
         /// Skip enumeratedValues and writeConstraints during parsing (XML input only)
         #[clap(long)]
         ignore_enums: bool,
+
+        /// Path to format config file
+        ///
+        /// If not specified, the default format config will be used.
+        ///
+        /// Only used for SVD output format.
+        #[clap(long = "format-config", parse(from_os_str))]
+        format_config: Option<PathBuf>,
     },
 }
 
@@ -94,14 +102,18 @@ impl Command {
                 expand,
                 expand_properties,
                 ignore_enums,
+                format_config,
             } => convert_cli::convert(
                 in_path,
                 out_path,
                 *input_format,
                 *output_format,
-                *expand,
-                *expand_properties,
-                *ignore_enums,
+                convert_cli::ParserConfig {
+                    expand: *expand,
+                    expand_properties: *expand_properties,
+                    ignore_enums: *ignore_enums,
+                },
+                format_config.as_ref().map(|p| p.as_path()),
             )?,
         }
         Ok(())
diff --git a/src/convert/convert_cli.rs b/src/convert/convert_cli.rs
index b05ad137..b8250091 100644
--- a/src/convert/convert_cli.rs
+++ b/src/convert/convert_cli.rs
@@ -18,7 +18,7 @@ impl FromStr for InputFormat {
             "svd" | "SVD" | "xml" | "XML" => Ok(Self::Xml),
             "yml" | "yaml" | "YAML" => Ok(Self::Yaml),
             "json" | "JSON" => Ok(Self::Json),
-            _ => return Err(anyhow!("Unknown input file format")),
+            _ => Err(anyhow!("Unknown input file format")),
         }
     }
 }
@@ -38,19 +38,42 @@ impl FromStr for OutputFormat {
             "svd" | "SVD" | "xml" | "XML" => Ok(Self::Xml),
             "yml" | "yaml" | "YAML" => Ok(Self::Yaml),
             "json" | "JSON" => Ok(Self::Json),
-            _ => return Err(anyhow!("Unknown output file format")),
+            _ => Err(anyhow!("Unknown output file format")),
         }
     }
 }
 
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+#[non_exhaustive]
+pub enum ConfigFormat {
+    Yaml,
+    Json,
+}
+
+impl FromStr for ConfigFormat {
+    type Err = anyhow::Error;
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        match s {
+            "yml" | "yaml" | "YAML" => Ok(Self::Yaml),
+            "json" | "JSON" => Ok(Self::Json),
+            _ => Err(anyhow!("Unknown config file format")),
+        }
+    }
+}
+
+pub struct ParserConfig {
+    pub expand: bool,
+    pub expand_properties: bool,
+    pub ignore_enums: bool,
+}
+
 pub fn convert(
     in_path: &Path,
     out_path: &Path,
     input_format: Option<InputFormat>,
     output_format: Option<OutputFormat>,
-    expand: bool,
-    expand_properties: bool,
-    ignore_enums: bool,
+    parser_config: ParserConfig,
+    format_config: Option<&Path>,
 ) -> Result<()> {
     let input_format = match input_format {
         None => match in_path.extension().and_then(|e| e.to_str()) {
@@ -73,22 +96,45 @@ pub fn convert(
     let mut device = match input_format {
         InputFormat::Xml => svd_parser::parse_with_config(
             &input,
-            &svd_parser::Config::default().ignore_enums(ignore_enums),
+            &svd_parser::Config::default().ignore_enums(parser_config.ignore_enums),
         )?,
         InputFormat::Yaml => serde_yaml::from_str(&input)?,
         InputFormat::Json => serde_json::from_str(&input)?,
     };
-    if expand_properties {
+    if parser_config.expand_properties {
         svd_parser::expand_properties(&mut device);
     }
-    let device = if expand {
+    let device = if parser_config.expand {
         svd_parser::expand(&device)?
     } else {
         device
     };
 
+    let config = if let Some(format_config) = format_config {
+        let config_format = match format_config.extension().and_then(|e| e.to_str()) {
+            Some(s) => ConfigFormat::from_str(s)?,
+            _ => return Err(anyhow!("Unknown output file format")),
+        };
+        let mut config = String::new();
+        File::open(format_config)?.read_to_string(&mut config)?;
+
+        let config_map: std::collections::HashMap<String, String> = match config_format {
+            ConfigFormat::Yaml => serde_yaml::from_str(&config)?,
+            ConfigFormat::Json => serde_json::from_str(&config)?,
+        };
+
+        let mut config = svd_encoder::Config::default();
+        config_map
+            .iter()
+            .for_each(|(name, value)| config.update(name, value));
+
+        config
+    } else {
+        svd_encoder::Config::default()
+    };
+
     let output = match output_format {
-        OutputFormat::Xml => svd_encoder::encode(&device)?,
+        OutputFormat::Xml => svd_encoder::encode_with_config(&device, &config)?,
         OutputFormat::Yaml => serde_yaml::to_string(&device)?,
         OutputFormat::Json => serde_json::to_string_pretty(&device)?,
     };
diff --git a/src/patch/device.rs b/src/patch/device.rs
index d5deee4b..c4f83904 100644
--- a/src/patch/device.rs
+++ b/src/patch/device.rs
@@ -19,14 +19,9 @@ pub struct PerIter<'a, 'b> {
 impl<'a, 'b> Iterator for PerIter<'a, 'b> {
     type Item = &'a mut Peripheral;
     fn next(&mut self) -> Option<Self::Item> {
-        for next in self.it.by_ref() {
-            if matchname(&next.name, self.spec)
-                && !(self.check_derived && next.derived_from.is_some())
-            {
-                return Some(next);
-            }
-        }
-        None
+        self.it.by_ref().find(|next| {
+            matchname(&next.name, self.spec) && !(self.check_derived && next.derived_from.is_some())
+        })
     }
 }
 
diff --git a/src/patch/iterators.rs b/src/patch/iterators.rs
index 833fc369..0acb0146 100644
--- a/src/patch/iterators.rs
+++ b/src/patch/iterators.rs
@@ -18,12 +18,9 @@ where
 {
     type Item = I::Item;
     fn next(&mut self) -> Option<Self::Item> {
-        for next in self.it.by_ref() {
-            if matchname(next.name(), self.spec) {
-                return Some(next);
-            }
-        }
-        None
+        self.it
+            .by_ref()
+            .find(|next| matchname(next.name(), self.spec))
     }
 }
 
@@ -60,7 +57,7 @@ where
     }
 }
 
-impl<'a, I> Iterator for OptIter<I>
+impl<I> Iterator for OptIter<I>
 where
     I: Iterator,
 {