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sandbox: test: Add a second SPI slave on sandbox_spi bus

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Place a second spi slave on the sandbox_spi bus, to be used by the
spi_claim_bus() testcase we are about to introduce. We need to make sure
that jumping between slaves calling spi_claim_bus() sets the bus speed and
mode appropriately. Use different max-hz and mode properties for this new
slave.

Also, update sandbox_spi cs_info call to allow activity on CS0/CS1 and
adapt dm_test_spi_find() testcase for this new setup.

Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Ovidiu Panait 2020-12-14 19:06:47 +02:00 • committed by Simon Glass
parent 1f6d618bb1
commit 1dc53ce71d
3 changed files with 12 additions and 4 deletions
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10
arch/sandbox/dts/test.dts
View file

@ -865,13 +865,21 @@
#size-cells = <0>; #size-cells = <0>;
reg = <0 1>; reg = <0 1>;
compatible = "sandbox,spi"; compatible = "sandbox,spi";
cs-gpios = <0>, <&gpio_a 0>; cs-gpios = <0>, <0>, <&gpio_a 0>;
spi.bin@0 { spi.bin@0 {
reg = <0>; reg = <0>;
compatible = "spansion,m25p16", "jedec,spi-nor"; compatible = "spansion,m25p16", "jedec,spi-nor";
spi-max-frequency = <40000000>; spi-max-frequency = <40000000>;
sandbox,filename = "spi.bin"; sandbox,filename = "spi.bin";
}; };
spi.bin@1 {
reg = <1>;
compatible = "spansion,m25p16", "jedec,spi-nor";
spi-max-frequency = <50000000>;
sandbox,filename = "spi.bin";
spi-cpol;
spi-cpha;
};
}; };
syscon0: syscon@0 { syscon0: syscon@0 {

4
drivers/spi/sandbox_spi.c
View file

@ -101,8 +101,8 @@ static int sandbox_spi_set_mode(struct udevice *bus, uint mode)
static int sandbox_cs_info(struct udevice *bus, uint cs, static int sandbox_cs_info(struct udevice *bus, uint cs,
struct spi_cs_info *info) struct spi_cs_info *info)
{ {
/* Always allow activity on CS 0 */ /* Always allow activity on CS 0, CS 1 */
if (cs >= 1) if (cs >= 2)
return -EINVAL; return -EINVAL;
return 0; return 0;

2
test/dm/spi.c
View file

@ -22,7 +22,7 @@ static int dm_test_spi_find(struct unit_test_state *uts)
struct sandbox_state *state = state_get_current(); struct sandbox_state *state = state_get_current();
struct spi_slave *slave; struct spi_slave *slave;
struct udevice *bus, *dev; struct udevice *bus, *dev;
const int busnum = 0, cs = 0, mode = 0, speed = 1000000, cs_b = 1; const int busnum = 0, cs = 0, mode = 0, speed = 1000000, cs_b = 2;
struct spi_cs_info info; struct spi_cs_info info;
ofnode node; ofnode node;