Hi Rob,
Thanks for your review. Please see my answers inline.
On 5/1/2018 8:02 AM, Rob Herring wrote:
On Thu, Apr 26, 2018 at 10:22:32AM -0700, Jae Hyun Yoo wrote:
This commit fixes incorrect setting of reset bits for PCI/VGA and PECI modules.
- Reset bit for PCI/VGA is 8.
- PECI reset bit is missing so added bit 10 as its reset bit.
Signed-off-by: Jae Hyun Yoo jae.hyun.yoo@linux.intel.com Fixes: 15ed8ce5f84e ("clk: aspeed: Register gated clocks") Cc: stable stable@vger.kernel.org
drivers/clk/clk-aspeed.c | 4 ++-- include/dt-bindings/clock/aspeed-clock.h | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/clk/clk-aspeed.c b/drivers/clk/clk-aspeed.c index 5eb50c31e455..2c23e7d7ba28 100644 --- a/drivers/clk/clk-aspeed.c +++ b/drivers/clk/clk-aspeed.c @@ -88,7 +88,7 @@ static const struct aspeed_gate_data aspeed_gates[] = { [ASPEED_CLK_GATE_GCLK] = { 1, 7, "gclk-gate", NULL, 0 }, /* 2D engine */ [ASPEED_CLK_GATE_MCLK] = { 2, -1, "mclk-gate", "mpll", CLK_IS_CRITICAL }, /* SDRAM */ [ASPEED_CLK_GATE_VCLK] = { 3, 6, "vclk-gate", NULL, 0 }, /* Video Capture */
- [ASPEED_CLK_GATE_BCLK] = { 4, 10, "bclk-gate", "bclk", 0 }, /* PCIe/PCI */
- [ASPEED_CLK_GATE_BCLK] = { 4, 8, "bclk-gate", "bclk", 0 }, /* PCIe/PCI */
This is the clk/reset combined setting for PCI/VGA and '8' is the reset bit for itself so no additional reset bit setting is needed. A reset will be triggered when BCLK is enabled.
[ASPEED_CLK_GATE_DCLK] = { 5, -1, "dclk-gate", NULL, 0 }, /* DAC */ [ASPEED_CLK_GATE_REFCLK] = { 6, -1, "refclk-gate", "clkin", CLK_IS_CRITICAL }, [ASPEED_CLK_GATE_USBPORT2CLK] = { 7, 3, "usb-port2-gate", NULL, 0 }, /* USB2.0 Host port 2 */ @@ -297,7 +297,7 @@ static const u8 aspeed_resets[] = { [ASPEED_RESET_JTAG_MASTER] = 22, [ASPEED_RESET_MIC] = 18, [ASPEED_RESET_PWM] = 9,
- [ASPEED_RESET_PCIVGA] = 8,
- [ASPEED_RESET_PECI] = 10, [ASPEED_RESET_I2C] = 2, [ASPEED_RESET_AHB] = 1, };
diff --git a/include/dt-bindings/clock/aspeed-clock.h b/include/dt-bindings/clock/aspeed-clock.h index d3558d897a4d..8d69b9134bef 100644 --- a/include/dt-bindings/clock/aspeed-clock.h +++ b/include/dt-bindings/clock/aspeed-clock.h @@ -45,7 +45,7 @@ #define ASPEED_RESET_JTAG_MASTER 3 #define ASPEED_RESET_MIC 4 #define ASPEED_RESET_PWM 5 -#define ASPEED_RESET_PCIVGA 6 +#define ASPEED_RESET_PECI 6
You can't really be changing these as they represent an ABI.
Is there no PCIVGA reset?
This is a bug fixing. Previously, PCI/VGA used PECI reset bit so this patch corrects the reset bit for PCI/VGA from bit '10' to bit '8', and it adds PECI reset bit '10' here as it can't be combined with a clock gate bit.
Thanks,
Jae
#define ASPEED_RESET_I2C 7 #define ASPEED_RESET_AHB 8 -- 2.17.0