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authorJon Hunter <jon-hunter@ti.com>2011-10-07 02:53:09 -0400
committerPaul Walmsley <paul@pwsan.com>2011-10-07 03:06:48 -0400
commitcf2a82d7462e8c728260ee09e46c573fab2f89cf (patch)
tree5937a03d039c2713de65926c14a3b039001faa49 /Documentation/spi
parent52a3a4d4610cfad536b8ac94b9a2f5ebfa51c06b (diff)
ARM: OMAP4: clock: Add missing clock divider for OCP_ABE_ICLK
The parent clock of the OCP_ABE_ICLK is the AESS_FCLK and the parent clock of the AESS_FCLK is the ABE_FCLK... ABE_FCLK --> AESS_FCLK --> OCP_ABE_ICLK The AESS_FCLK and OCP_ABE_ICLK clocks both have dividers which determine their operational frequency. However, the dividers for the AESS_FCLK and OCP_ABE_ICLK are controlled via a single bit, which is the CM1_ABE_AESS_CLKCTRL[24] bit. When this bit is set to 0, the AESS_FCLK divider is 1 and the OCP_ABE_ICLK divider is 2. Similarly, when this bit is set to 1, the AESS_FCLK divider is 2 and the OCP_ABE_ICLK is 1. The above relationship between the AESS_FCLK and OCP_ABE_ICLK dividers ensure that the OCP_ABE_ICLK clock is always half the frequency of the ABE_CLK... OCP_ABE_ICLK = ABE_FCLK/2 The divider for the OCP_ABE_ICLK is currently missing so add a divider that will ensure the OCP_ABE_ICLK frequency is always half the ABE_FCLK frequency. Signed-off-by: Jon Hunter <jon-hunter@ti.com> Signed-off-by: Paul Walmsley <paul@pwsan.com>
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