| Message ID | 20240709063949.4127310-3-quic_varada@quicinc.com (mailing list archive) |
|---|---|
| State | Handled Elsewhere, archived |
| Headers | show |
| Series | Add interconnect driver for IPQ5332 SoC | expand |
On Tue, Jul 09, 2024 at 12:09:47PM GMT, Varadarajan Narayanan wrote: > Use the icc-clk framework to enable few clocks to be able to > create paths and use the peripherals connected on those NoCs. > > Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com> > --- > drivers/clk/qcom/gcc-ipq5332.c | 36 +++++++++++++++++++++++++++++----- > 1 file changed, 31 insertions(+), 5 deletions(-) > > diff --git a/drivers/clk/qcom/gcc-ipq5332.c b/drivers/clk/qcom/gcc-ipq5332.c > index f98591148a97..6d7672cae0f7 100644 > --- a/drivers/clk/qcom/gcc-ipq5332.c > +++ b/drivers/clk/qcom/gcc-ipq5332.c > @@ -4,12 +4,14 @@ > */ > > #include <linux/clk-provider.h> > +#include <linux/interconnect-provider.h> > #include <linux/mod_devicetable.h> > #include <linux/module.h> > #include <linux/platform_device.h> > #include <linux/regmap.h> > > #include <dt-bindings/clock/qcom,ipq5332-gcc.h> > +#include <dt-bindings/interconnect/qcom,ipq5332.h> > > #include "clk-alpha-pll.h" > #include "clk-branch.h" > @@ -131,12 +133,14 @@ static struct clk_alpha_pll gpll4_main = { > * (will be added soon), so the clock framework > * disables this source. But some of the clocks > * initialized by boot loaders uses this source. So we > - * need to keep this clock ON. Add the > - * CLK_IGNORE_UNUSED flag so the clock will not be > - * disabled. Once the consumer in kernel is added, we > - * can get rid of this flag. > + * need to keep this clock ON. > + * > + * After initial bootup, when the ICC framework turns > + * off unused paths, as part of the icc-clk dependencies > + * this clock gets disabled resulting in a hang. Marking > + * it as critical to ensure it is not turned off. Are there any other users for this clocks? What exactly causes the hang? > */ > - .flags = CLK_IGNORE_UNUSED, > + .flags = CLK_IS_CRITICAL, > }, > }, > }; > @@ -3628,6 +3632,24 @@ static const struct qcom_reset_map gcc_ipq5332_resets[] = { > [GCC_UNIPHY1_XPCS_ARES] = { 0x16060 }, > }; > > +#define IPQ_APPS_ID 5332 /* some unique value */ > + > +static struct qcom_icc_hws_data icc_ipq5332_hws[] = { > + { MASTER_SNOC_PCIE3_1_M, SLAVE_SNOC_PCIE3_1_M, GCC_SNOC_PCIE3_1LANE_M_CLK }, > + { MASTER_ANOC_PCIE3_1_S, SLAVE_ANOC_PCIE3_1_S, GCC_SNOC_PCIE3_1LANE_S_CLK }, > + { MASTER_SNOC_PCIE3_2_M, SLAVE_SNOC_PCIE3_2_M, GCC_SNOC_PCIE3_2LANE_M_CLK }, > + { MASTER_ANOC_PCIE3_2_S, SLAVE_ANOC_PCIE3_2_S, GCC_SNOC_PCIE3_2LANE_S_CLK }, > + { MASTER_SNOC_USB, SLAVE_SNOC_USB, GCC_SNOC_USB_CLK }, > + { MASTER_NSSNOC_NSSCC, SLAVE_NSSNOC_NSSCC, GCC_NSSNOC_NSSCC_CLK }, > + { MASTER_NSSNOC_SNOC_0, SLAVE_NSSNOC_SNOC_0, GCC_NSSNOC_SNOC_CLK }, > + { MASTER_NSSNOC_SNOC_1, SLAVE_NSSNOC_SNOC_1, GCC_NSSNOC_SNOC_1_CLK }, > + { MASTER_NSSNOC_ATB, SLAVE_NSSNOC_ATB, GCC_NSSNOC_ATB_CLK }, > + { MASTER_NSSNOC_PCNOC_1, SLAVE_NSSNOC_PCNOC_1, GCC_NSSNOC_PCNOC_1_CLK }, > + { MASTER_NSSNOC_QOSGEN_REF, SLAVE_NSSNOC_QOSGEN_REF, GCC_NSSNOC_QOSGEN_REF_CLK }, > + { MASTER_NSSNOC_TIMEOUT_REF, SLAVE_NSSNOC_TIMEOUT_REF, GCC_NSSNOC_TIMEOUT_REF_CLK }, > + { MASTER_NSSNOC_XO_DCD, SLAVE_NSSNOC_XO_DCD, GCC_NSSNOC_XO_DCD_CLK }, > +}; > + > static const struct regmap_config gcc_ipq5332_regmap_config = { > .reg_bits = 32, > .reg_stride = 4, > @@ -3656,6 +3678,9 @@ static const struct qcom_cc_desc gcc_ipq5332_desc = { > .num_resets = ARRAY_SIZE(gcc_ipq5332_resets), > .clk_hws = gcc_ipq5332_hws, > .num_clk_hws = ARRAY_SIZE(gcc_ipq5332_hws), > + .icc_hws = icc_ipq5332_hws, > + .num_icc_hws = ARRAY_SIZE(icc_ipq5332_hws), > + .icc_first_node_id = IPQ_APPS_ID, > }; > > static int gcc_ipq5332_probe(struct platform_device *pdev) > @@ -3674,6 +3699,7 @@ static struct platform_driver gcc_ipq5332_driver = { > .driver = { > .name = "gcc-ipq5332", > .of_match_table = gcc_ipq5332_match_table, > + .sync_state = icc_sync_state, > }, > }; > > -- > 2.34.1 >
diff --git a/drivers/clk/qcom/gcc-ipq5332.c b/drivers/clk/qcom/gcc-ipq5332.c index f98591148a97..6d7672cae0f7 100644 --- a/drivers/clk/qcom/gcc-ipq5332.c +++ b/drivers/clk/qcom/gcc-ipq5332.c @@ -4,12 +4,14 @@ */ #include <linux/clk-provider.h> +#include <linux/interconnect-provider.h> #include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <dt-bindings/clock/qcom,ipq5332-gcc.h> +#include <dt-bindings/interconnect/qcom,ipq5332.h> #include "clk-alpha-pll.h" #include "clk-branch.h" @@ -131,12 +133,14 @@ static struct clk_alpha_pll gpll4_main = { * (will be added soon), so the clock framework * disables this source. But some of the clocks * initialized by boot loaders uses this source. So we - * need to keep this clock ON. Add the - * CLK_IGNORE_UNUSED flag so the clock will not be - * disabled. Once the consumer in kernel is added, we - * can get rid of this flag. + * need to keep this clock ON. + * + * After initial bootup, when the ICC framework turns + * off unused paths, as part of the icc-clk dependencies + * this clock gets disabled resulting in a hang. Marking + * it as critical to ensure it is not turned off. */ - .flags = CLK_IGNORE_UNUSED, + .flags = CLK_IS_CRITICAL, }, }, }; @@ -3628,6 +3632,24 @@ static const struct qcom_reset_map gcc_ipq5332_resets[] = { [GCC_UNIPHY1_XPCS_ARES] = { 0x16060 }, }; +#define IPQ_APPS_ID 5332 /* some unique value */ + +static struct qcom_icc_hws_data icc_ipq5332_hws[] = { + { MASTER_SNOC_PCIE3_1_M, SLAVE_SNOC_PCIE3_1_M, GCC_SNOC_PCIE3_1LANE_M_CLK }, + { MASTER_ANOC_PCIE3_1_S, SLAVE_ANOC_PCIE3_1_S, GCC_SNOC_PCIE3_1LANE_S_CLK }, + { MASTER_SNOC_PCIE3_2_M, SLAVE_SNOC_PCIE3_2_M, GCC_SNOC_PCIE3_2LANE_M_CLK }, + { MASTER_ANOC_PCIE3_2_S, SLAVE_ANOC_PCIE3_2_S, GCC_SNOC_PCIE3_2LANE_S_CLK }, + { MASTER_SNOC_USB, SLAVE_SNOC_USB, GCC_SNOC_USB_CLK }, + { MASTER_NSSNOC_NSSCC, SLAVE_NSSNOC_NSSCC, GCC_NSSNOC_NSSCC_CLK }, + { MASTER_NSSNOC_SNOC_0, SLAVE_NSSNOC_SNOC_0, GCC_NSSNOC_SNOC_CLK }, + { MASTER_NSSNOC_SNOC_1, SLAVE_NSSNOC_SNOC_1, GCC_NSSNOC_SNOC_1_CLK }, + { MASTER_NSSNOC_ATB, SLAVE_NSSNOC_ATB, GCC_NSSNOC_ATB_CLK }, + { MASTER_NSSNOC_PCNOC_1, SLAVE_NSSNOC_PCNOC_1, GCC_NSSNOC_PCNOC_1_CLK }, + { MASTER_NSSNOC_QOSGEN_REF, SLAVE_NSSNOC_QOSGEN_REF, GCC_NSSNOC_QOSGEN_REF_CLK }, + { MASTER_NSSNOC_TIMEOUT_REF, SLAVE_NSSNOC_TIMEOUT_REF, GCC_NSSNOC_TIMEOUT_REF_CLK }, + { MASTER_NSSNOC_XO_DCD, SLAVE_NSSNOC_XO_DCD, GCC_NSSNOC_XO_DCD_CLK }, +}; + static const struct regmap_config gcc_ipq5332_regmap_config = { .reg_bits = 32, .reg_stride = 4, @@ -3656,6 +3678,9 @@ static const struct qcom_cc_desc gcc_ipq5332_desc = { .num_resets = ARRAY_SIZE(gcc_ipq5332_resets), .clk_hws = gcc_ipq5332_hws, .num_clk_hws = ARRAY_SIZE(gcc_ipq5332_hws), + .icc_hws = icc_ipq5332_hws, + .num_icc_hws = ARRAY_SIZE(icc_ipq5332_hws), + .icc_first_node_id = IPQ_APPS_ID, }; static int gcc_ipq5332_probe(struct platform_device *pdev) @@ -3674,6 +3699,7 @@ static struct platform_driver gcc_ipq5332_driver = { .driver = { .name = "gcc-ipq5332", .of_match_table = gcc_ipq5332_match_table, + .sync_state = icc_sync_state, }, };
Use the icc-clk framework to enable few clocks to be able to create paths and use the peripherals connected on those NoCs. Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com> --- drivers/clk/qcom/gcc-ipq5332.c | 36 +++++++++++++++++++++++++++++----- 1 file changed, 31 insertions(+), 5 deletions(-)