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authorAngelo Dureghello <angelo@kernel-space.org>2021-07-02 11:48:39 +0200
committerGreg Ungerer <gerg@linux-m68k.org>2021-08-23 08:40:04 +1000
commit35a9f9363a89aa964c85b769c434a42b8b0f4b0d (patch)
tree072a64529ce802180a18162ffc2fc0a984f74cff /arch/m68k
parent40cff49289d5eab6c1db7792ae043e5b04903dd6 (diff)
m68k: m5441x: add flexcan support
Add flexcan support. Signed-off-by: Angelo Dureghello <angelo@kernel-space.org> Made the flexcan resource inclusion conditional based on the enablement of the flexcan driver. This commit is no longer dependant on the presence of the updated driver in mainline. Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>
Diffstat (limited to 'arch/m68k')
-rw-r--r--arch/m68k/coldfire/device.c44
-rw-r--r--arch/m68k/coldfire/m5441x.c8
-rw-r--r--arch/m68k/include/asm/m5441xsim.h19
3 files changed, 67 insertions, 4 deletions
diff --git a/arch/m68k/coldfire/device.c b/arch/m68k/coldfire/device.c
index 59f7dfe50a4d..0386252e9d04 100644
--- a/arch/m68k/coldfire/device.c
+++ b/arch/m68k/coldfire/device.c
@@ -581,6 +581,47 @@ static struct platform_device mcf_esdhc = {
};
#endif /* MCFSDHC_BASE */
+#if IS_ENABLED(CONFIG_CAN_FLEXCAN)
+
+#include <linux/can/platform/flexcan.h>
+
+static struct flexcan_platform_data mcf5441x_flexcan_info = {
+ .clk_src = 1,
+ .clock_frequency = 120000000,
+};
+
+static struct resource mcf5441x_flexcan0_resource[] = {
+ {
+ .start = MCFFLEXCAN_BASE0,
+ .end = MCFFLEXCAN_BASE0 + MCFFLEXCAN_SIZE,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = MCF_IRQ_IFL0,
+ .end = MCF_IRQ_IFL0,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .start = MCF_IRQ_BOFF0,
+ .end = MCF_IRQ_BOFF0,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .start = MCF_IRQ_ERR0,
+ .end = MCF_IRQ_ERR0,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device mcf_flexcan0 = {
+ .name = "flexcan-mcf5441x",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(mcf5441x_flexcan0_resource),
+ .resource = mcf5441x_flexcan0_resource,
+ .dev.platform_data = &mcf5441x_flexcan_info,
+};
+#endif /* IS_ENABLED(CONFIG_CAN_FLEXCAN) */
+
static struct platform_device *mcf_devices[] __initdata = {
&mcf_uart,
#if IS_ENABLED(CONFIG_FEC)
@@ -616,6 +657,9 @@ static struct platform_device *mcf_devices[] __initdata = {
#ifdef MCFSDHC_BASE
&mcf_esdhc,
#endif
+#if IS_ENABLED(CONFIG_CAN_FLEXCAN)
+ &mcf_flexcan0,
+#endif
};
/*
diff --git a/arch/m68k/coldfire/m5441x.c b/arch/m68k/coldfire/m5441x.c
index ce14693d18b6..39855044090d 100644
--- a/arch/m68k/coldfire/m5441x.c
+++ b/arch/m68k/coldfire/m5441x.c
@@ -19,8 +19,8 @@
#include <asm/mcfclk.h>
DEFINE_CLK(0, "flexbus", 2, MCF_CLK);
-DEFINE_CLK(0, "mcfcan.0", 8, MCF_CLK);
-DEFINE_CLK(0, "mcfcan.1", 9, MCF_CLK);
+DEFINE_CLK(0, "flexcan.0", 8, MCF_CLK);
+DEFINE_CLK(0, "flexcan.1", 9, MCF_CLK);
DEFINE_CLK(0, "imx1-i2c.1", 14, MCF_CLK);
DEFINE_CLK(0, "mcfdspi.1", 15, MCF_CLK);
DEFINE_CLK(0, "edma", 17, MCF_CLK);
@@ -142,6 +142,8 @@ static struct clk_lookup m5411x_clk_lookup[] = {
static struct clk * const enable_clks[] __initconst = {
/* make sure these clocks are enabled */
+ &__clk_0_8, /* flexcan.0 */
+ &__clk_0_9, /* flexcan.1 */
&__clk_0_15, /* dspi.1 */
&__clk_0_17, /* eDMA */
&__clk_0_18, /* intc0 */
@@ -162,8 +164,6 @@ static struct clk * const enable_clks[] __initconst = {
&__clk_1_37, /* gpio */
};
static struct clk * const disable_clks[] __initconst = {
- &__clk_0_8, /* can.0 */
- &__clk_0_9, /* can.1 */
&__clk_0_14, /* i2c.1 */
&__clk_0_22, /* i2c.0 */
&__clk_0_23, /* dspi.0 */
diff --git a/arch/m68k/include/asm/m5441xsim.h b/arch/m68k/include/asm/m5441xsim.h
index e091e36d3464..f48cf63bd782 100644
--- a/arch/m68k/include/asm/m5441xsim.h
+++ b/arch/m68k/include/asm/m5441xsim.h
@@ -73,6 +73,12 @@
#define MCFINT0_FECENTC1 55
/* on interrupt controller 1 */
+#define MCFINT1_FLEXCAN0_IFL 0
+#define MCFINT1_FLEXCAN0_BOFF 1
+#define MCFINT1_FLEXCAN0_ERR 3
+#define MCFINT1_FLEXCAN1_IFL 4
+#define MCFINT1_FLEXCAN1_BOFF 5
+#define MCFINT1_FLEXCAN1_ERR 7
#define MCFINT1_UART4 48
#define MCFINT1_UART5 49
#define MCFINT1_UART6 50
@@ -314,4 +320,17 @@
#define MCF_IRQ_SDHC (MCFINT2_VECBASE + MCFINT2_SDHC)
#define MCFSDHC_CLK (MCFSDHC_BASE + 0x2c)
+/*
+ * Flexcan module
+ */
+#define MCFFLEXCAN_BASE0 0xfc020000
+#define MCFFLEXCAN_BASE1 0xfc024000
+#define MCFFLEXCAN_SIZE 0x4000
+#define MCF_IRQ_IFL0 (MCFINT1_VECBASE + MCFINT1_FLEXCAN0_IFL)
+#define MCF_IRQ_BOFF0 (MCFINT1_VECBASE + MCFINT1_FLEXCAN0_BOFF)
+#define MCF_IRQ_ERR0 (MCFINT1_VECBASE + MCFINT1_FLEXCAN0_ERR)
+#define MCF_IRQ_IFL1 (MCFINT1_VECBASE + MCFINT1_FLEXCAN1_IFL)
+#define MCF_IRQ_BOFF1 (MCFINT1_VECBASE + MCFINT1_FLEXCAN1_BOFF)
+#define MCF_IRQ_ERR1 (MCFINT1_VECBASE + MCFINT1_FLEXCAN1_ERR)
+
#endif /* m5441xsim_h */