ARM: dts: at91: fixes dbgu pinctrl, set pullup on rx, clear pullup on tx

Remove pullup on dbgu DTXD signal, it is a push-pull output thus the
pullup is pointless.

Add pullup on dbgu DRXD signal, it prevents the DRXD signal to be left
floating and so consuming a useless extra amount of power in crowbarred
state if nothing is externally connected to dbgu.

Signed-off-by: Sylvain Rochet <sylvain.rochet@finsecur.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

diff --git a/arch/arm/boot/dts/at91rm9200.dtsi b/arch/arm/boot/dts/at91rm9200.dtsi
index 4e913c2..f057e0b 100644 (file)
--- a/arch/arm/boot/dts/at91rm9200.dtsi
+++ b/arch/arm/boot/dts/at91rm9200.dtsi
@@ -481,8 +481,8 @@
                                dbgu {
                                        pinctrl_dbgu: dbgu-0 {
                                                atmel,pins =
-                                                       <AT91_PIOA 30 AT91_PERIPH_A AT91_PINCTRL_NONE   /* PA30 periph A */
-                                                        AT91_PIOA 31 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>;      /* PA31 periph with pullup */
+                                                       <AT91_PIOA 30 AT91_PERIPH_A AT91_PINCTRL_PULL_UP
+                                                        AT91_PIOA 31 AT91_PERIPH_A AT91_PINCTRL_NONE>;
                                        };
                                };
 

diff --git a/arch/arm/boot/dts/at91sam9260.dtsi b/arch/arm/boot/dts/at91sam9260.dtsi
index a3e363d..9e035b2 100644 (file)
--- a/arch/arm/boot/dts/at91sam9260.dtsi
+++ b/arch/arm/boot/dts/at91sam9260.dtsi
@@ -412,8 +412,8 @@
                                dbgu {
                                        pinctrl_dbgu: dbgu-0 {
                                                atmel,pins =
-                                                       <AT91_PIOB 14 AT91_PERIPH_A AT91_PINCTRL_NONE   /* PB14 periph A */
-                                                        AT91_PIOB 15 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>;      /* PB15 periph with pullup */
+                                                       <AT91_PIOB 14 AT91_PERIPH_A AT91_PINCTRL_PULL_UP
+                                                        AT91_PIOB 15 AT91_PERIPH_A AT91_PINCTRL_NONE>;
                                        };
                                };
 

diff --git a/arch/arm/boot/dts/at91sam9261.dtsi b/arch/arm/boot/dts/at91sam9261.dtsi
index 32752d7..3fe77c3 100644 (file)
--- a/arch/arm/boot/dts/at91sam9261.dtsi
+++ b/arch/arm/boot/dts/at91sam9261.dtsi
@@ -302,8 +302,8 @@
                                dbgu {
                                        pinctrl_dbgu: dbgu-0 {
                                                atmel,pins =
-                                                       <AT91_PIOA 9  AT91_PERIPH_A AT91_PINCTRL_NONE>,
-                                                       <AT91_PIOA 10 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>;
+                                                       <AT91_PIOA 9  AT91_PERIPH_A AT91_PINCTRL_PULL_UP>,
+                                                       <AT91_PIOA 10 AT91_PERIPH_A AT91_PINCTRL_NONE>;
                                        };
                                };
 

diff --git a/arch/arm/boot/dts/at91sam9263.dtsi b/arch/arm/boot/dts/at91sam9263.dtsi
index aeb1a36..a1888f6 100644 (file)
--- a/arch/arm/boot/dts/at91sam9263.dtsi
+++ b/arch/arm/boot/dts/at91sam9263.dtsi
@@ -412,8 +412,8 @@
                                dbgu {
                                        pinctrl_dbgu: dbgu-0 {
                                                atmel,pins =
-                                                       <AT91_PIOC 30 AT91_PERIPH_A AT91_PINCTRL_NONE   /* PC30 periph A */
-                                                        AT91_PIOC 31 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>;      /* PC31 periph with pullup */
+                                                       <AT91_PIOC 30 AT91_PERIPH_A AT91_PINCTRL_PULL_UP
+                                                        AT91_PIOC 31 AT91_PERIPH_A AT91_PINCTRL_NONE>;
                                        };
                                };
 

diff --git a/arch/arm/boot/dts/at91sam9g45.dtsi b/arch/arm/boot/dts/at91sam9g45.dtsi
index b3501ae..e567d5f 100644 (file)
--- a/arch/arm/boot/dts/at91sam9g45.dtsi
+++ b/arch/arm/boot/dts/at91sam9g45.dtsi
@@ -478,8 +478,8 @@
                                dbgu {
                                        pinctrl_dbgu: dbgu-0 {
                                                atmel,pins =
-                                                       <AT91_PIOB 12 AT91_PERIPH_A AT91_PINCTRL_NONE   /* PB12 periph A */
-                                                        AT91_PIOB 13 AT91_PERIPH_A AT91_PINCTRL_NONE>; /* PB13 periph A */
+                                                       <AT91_PIOB 12 AT91_PERIPH_A AT91_PINCTRL_PULL_UP
+                                                        AT91_PIOB 13 AT91_PERIPH_A AT91_PINCTRL_NONE>;
                                        };
                                };
 

diff --git a/arch/arm/boot/dts/at91sam9n12.dtsi b/arch/arm/boot/dts/at91sam9n12.dtsi
index 3b3eb3e..f43d769 100644 (file)
--- a/arch/arm/boot/dts/at91sam9n12.dtsi
+++ b/arch/arm/boot/dts/at91sam9n12.dtsi
@@ -500,8 +500,8 @@
                                dbgu {
                                        pinctrl_dbgu: dbgu-0 {
                                                atmel,pins =
-                                                       <AT91_PIOA 9 AT91_PERIPH_A AT91_PINCTRL_NONE    /* PA9 periph A */
-                                                        AT91_PIOA 10 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>;      /* PA10 periph with pullup */
+                                                       <AT91_PIOA 9 AT91_PERIPH_A AT91_PINCTRL_PULL_UP
+                                                        AT91_PIOA 10 AT91_PERIPH_A AT91_PINCTRL_NONE>;
                                        };
                                };
 

diff --git a/arch/arm/boot/dts/at91sam9rl.dtsi b/arch/arm/boot/dts/at91sam9rl.dtsi
index 70adf94..f4c129a 100644 (file)
--- a/arch/arm/boot/dts/at91sam9rl.dtsi
+++ b/arch/arm/boot/dts/at91sam9rl.dtsi
@@ -438,8 +438,8 @@
                                dbgu {
                                        pinctrl_dbgu: dbgu-0 {
                                                atmel,pins =
-                                                       <AT91_PIOA 21 AT91_PERIPH_A AT91_PINCTRL_NONE>,
-                                                       <AT91_PIOA 22 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>;
+                                                       <AT91_PIOA 21 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>,
+                                                       <AT91_PIOA 22 AT91_PERIPH_A AT91_PINCTRL_NONE>;
                                        };
                                };
 

diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi
index ed4e4bd..f66bae9 100644 (file)
--- a/arch/arm/boot/dts/at91sam9x5.dtsi
+++ b/arch/arm/boot/dts/at91sam9x5.dtsi
@@ -460,8 +460,8 @@
                                dbgu {
                                        pinctrl_dbgu: dbgu-0 {
                                                atmel,pins =
-                                                       <AT91_PIOA 9 AT91_PERIPH_A AT91_PINCTRL_NONE    /* PA9 periph A */
-                                                        AT91_PIOA 10 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>;      /* PA10 periph A with pullup */
+                                                       <AT91_PIOA 9 AT91_PERIPH_A AT91_PINCTRL_PULL_UP
+                                                        AT91_PIOA 10 AT91_PERIPH_A AT91_PINCTRL_NONE>;
                                        };
                                };
 

diff --git a/arch/arm/boot/dts/sama5d3.dtsi b/arch/arm/boot/dts/sama5d3.dtsi
index 4c84d33..b06448b 100644 (file)
--- a/arch/arm/boot/dts/sama5d3.dtsi
+++ b/arch/arm/boot/dts/sama5d3.dtsi
@@ -549,8 +549,8 @@
                                dbgu {
                                        pinctrl_dbgu: dbgu-0 {
                                                atmel,pins =
-                                                       <AT91_PIOB 30 AT91_PERIPH_A AT91_PINCTRL_NONE   /* PB30 periph A */
-                                                        AT91_PIOB 31 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>;      /* PB31 periph A with pullup */
+                                                       <AT91_PIOB 30 AT91_PERIPH_A AT91_PINCTRL_PULL_UP
+                                                        AT91_PIOB 31 AT91_PERIPH_A AT91_PINCTRL_NONE>;
                                        };
                                };
 

diff --git a/arch/arm/boot/dts/sama5d4.dtsi b/arch/arm/boot/dts/sama5d4.dtsi
index 65e725f..f7bfc62 100644 (file)
--- a/arch/arm/boot/dts/sama5d4.dtsi
+++ b/arch/arm/boot/dts/sama5d4.dtsi
@@ -1461,8 +1461,8 @@
                                dbgu {
                                        pinctrl_dbgu: dbgu-0 {
                                                atmel,pins =
-                                                       <AT91_PIOB 24 AT91_PERIPH_A AT91_PINCTRL_NONE>,     /* conflicts with D14 and TDI */
-                                                       <AT91_PIOB 25 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>;  /* conflicts with D15 and TDO */
+                                                       <AT91_PIOB 24 AT91_PERIPH_A AT91_PINCTRL_PULL_UP        /* conflicts with D14 and TDI */
+                                                        AT91_PIOB 25 AT91_PERIPH_A AT91_PINCTRL_NONE>;         /* conflicts with D15 and TDO */
                                        };
                                };