ARM: k2g-ice: Add pinmux support for rgmii interface

This add pinmux configuration for rgmii interface so that network
driver can be supported on K2G ICE boards. The pinmux configurations
for this are generated using the pinmux tool at
https://dev.ti.com/pinmux/app.html#/default

As this required some BUFFER_CLASS definitions, same is re-used
from the linux defnitions in include/dt-bindings/pinctrl/keystone.h

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

diff --git a/arch/arm/mach-keystone/include/mach/mux-k2g.h b/arch/arm/mach-keystone/include/mach/mux-k2g.h
index 809b72d..67d47f8 100644 (file)
--- a/arch/arm/mach-keystone/include/mach/mux-k2g.h
+++ b/arch/arm/mach-keystone/include/mach/mux-k2g.h
@@ -27,6 +27,11 @@
 #define PIN_PTU        (1 << 17) /* pull up */
 #define PIN_PTD        (0 << 17) /* pull down */
 
+#define BUFFER_CLASS_B (0 << 19)
+#define BUFFER_CLASS_C (1 << 19)
+#define BUFFER_CLASS_D (2 << 19)
+#define BUFFER_CLASS_E (3 << 19)
+
 #define MODE(m)        ((m) & 0x7)
 #define MAX_PIN_N      260
 

diff --git a/board/ti/ks2_evm/mux-k2g.h b/board/ti/ks2_evm/mux-k2g.h
index 706fb7e..8c184a8 100644 (file)
--- a/board/ti/ks2_evm/mux-k2g.h
+++ b/board/ti/ks2_evm/mux-k2g.h
@@ -346,6 +346,25 @@ struct pin_cfg k2g_ice_evm_pin_cfg[] = {
        { 133,  MODE(0) },      /* SOC_QSPI_D2 */
        { 134,  MODE(0) },      /* SOC_QSPI_D3 */
        { 135,  MODE(0) },      /* SOC_QSPI_CSN0 */
+
+       /* EMAC */
+       { 79,   BUFFER_CLASS_D | PIN_PDIS | MODE(1) },  /* RGMII_RXD1 */
+       { 78,   BUFFER_CLASS_D | PIN_PDIS | MODE(1) },  /* RGMII_RXD2 */
+       { 77,   BUFFER_CLASS_D | PIN_PDIS | MODE(1) },  /* RGMII_RXD3 */
+       { 80,   BUFFER_CLASS_D | PIN_PDIS | MODE(1) },  /* RGMII_RXD0 */
+       { 94,   BUFFER_CLASS_D | PIN_PDIS | MODE(1) },  /* RGMII_TXD0 */
+       { 93,   BUFFER_CLASS_D | PIN_PDIS | MODE(1) },  /* RGMII_TXD1 */
+       { 92,   BUFFER_CLASS_D | PIN_PDIS | MODE(1) },  /* RGMII_TXD2 */
+       { 91,   BUFFER_CLASS_D | PIN_PDIS | MODE(1) },  /* RGMII_TXD3 */
+       { 85,   BUFFER_CLASS_D | PIN_PDIS | MODE(1) },  /* RGMII_TXC */
+       { 95,   BUFFER_CLASS_D | PIN_PDIS | MODE(1) },  /* RGMII_TXCTL */
+       { 72,   BUFFER_CLASS_D | PIN_PDIS | MODE(1) },  /* RGMII_RXC */
+       { 81,   BUFFER_CLASS_D | PIN_PDIS | MODE(1) },  /* RGMII_RXCTL */
+
+       /* MDIO */
+       { 99,   BUFFER_CLASS_B | PIN_PDIS | MODE(0) },  /* MDIO_CLK */
+       { 98,   BUFFER_CLASS_B | PIN_PDIS | MODE(0) },  /* MDIO_DATA */
+
        { MAX_PIN_N, }
 };