[PATCH v3 11/15] at91: dt: Adds support for the bus matrix declaration in the device tree
From: Jean-Jacques Hiblot <hidden>
Date: 2014-01-23 15:57:15
Subsystem:
arm port, arm/microchip (at91) soc support, the rest · Maintainers:
Russell King, Nicolas Ferre, Alexandre Belloni, Claudiu Beznea, Linus Torvalds
Signed-off-by: Jean-Jacques Hiblot <redacted> --- arch/arm/mach-at91/setup.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+)
diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
index 7d3f7cc..f61638d 100644
--- a/arch/arm/mach-at91/setup.c
+++ b/arch/arm/mach-at91/setup.c@@ -483,6 +483,28 @@ end: of_node_put(np); } +static struct of_device_id matrix_ids[] = { + { .compatible = "atmel,at91sam9261-bus-matrix", }, + { /*sentinel*/ } +}; + +static void at91_dt_matrix(void) +{ + struct device_node *np; + + np = of_find_matching_node(NULL, matrix_ids); + if (!np) { + pr_debug("AT91: unable to find compatible bus matrix controller node in dtb\n"); + return; + } + + at91_matrix_base = of_iomap(np, 0); + if (!at91_matrix_base) + panic("Impossible to ioremap at91_matrix_base\n"); + + of_node_put(np); +} + void __init at91rm9200_dt_initialize(void) { at91_dt_ramc();
@@ -502,6 +524,7 @@ void __init at91_dt_initialize(void) at91_dt_rstc(); at91_dt_ramc(); at91_dt_shdwc(); + at91_dt_matrix(); /* Init clock subsystem */ at91_dt_clock_init();
--
1.8.5.2