fsi: aspeed: Enable 23-bit addressing (6e0ef7d2) · Commits · 戴 / test

In order to access more than the second hub link, 23-bit addressing is required. The core provides the highest two bits of address as the slave ID to the master. Signed-off-by:

Eddie James <eajames@linux.ibm.com> Acked-by:

Jeremy Kerr <jk@ozlabs.org> Signed-off-by:

Joel Stanley <joel@jms.id.au>

drivers/fsi/fsi-master-aspeed.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -241,9 +241,10 @@ static int aspeed_master_read(struct fsi_master *master, int link,
		struct fsi_master_aspeed *aspeed = to_fsi_master_aspeed(master);
		int ret;

		if (id != 0)
		if (id > 0x3)
		return -EINVAL;

		addr \|= id << 21;
		addr += link * FSI_HUB_LINK_SIZE;

		switch (size) {
		@@ -273,9 +274,10 @@ static int aspeed_master_write(struct fsi_master *master, int link,
		struct fsi_master_aspeed *aspeed = to_fsi_master_aspeed(master);
		int ret;

		if (id != 0)
		if (id > 0x3)
		return -EINVAL;

		addr \|= id << 21;
		addr += link * FSI_HUB_LINK_SIZE;

		switch (size) {

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